Yuma yangcli Manual

YANG-Based Unified Modular Automation Tools

NETCONF Over SSH Client

Version 2.10

Preface

Legal Statements

Additional Resources

This document assumes you have successfully set up the software as described in the printed document:

Yuma Installation Guide

WEB Sites

Netconf Central
- http://www.netconfcentral.org/
- Yuma Home Page
  - Free information on NETCONF and YANG, tutorials, on-line YANG module validation and documentation database
Yuma SourceFource OpenSource Project
- http://sourceforge.net/projects/yuma/
  - Download Yuma source and binaries; project forums and help
Yang Central
- http://www.yang-central.org
- Free information and tutorials on YANG, free YANG tools for download
NETCONF Working Group Wiki Page
- http://trac.tools.ietf.org/wg/netconf/trac/wiki
- Free information on NETCONF standardization activities and NETCONF implementations
NETCONF WG Status Page
- http://tools.ietf.org/wg/netconf/
- IETF Internet draft status for NETCONF documents
libsmi Home Page
- http://www.ibr.cs.tu-bs.de/projects/libsmi/
- Free tools such as smidump, to convert SMIv2 to YANG
YumaWorks
- http://www.yumaworks.com
- Offers support, training, and consulting for Yuma.
- Offers YumaPro, a professional version of Yuma that includes concurrency, external database support, sub-agent support, multiple northbound interfaces, and more. API compatible with Yuma. Availability: September, 2012. Licensed.
Transpacket
- http://www.transpacket.com
- Offers Linux based embedded operating system distribution which uses Yuma for configuration and monitoring.
- Offers support, training, and consulting for YANG and netconf.

Mailing Lists

NETCONF Working Group
- http://www.ietf.org/html.charters/netconf-charter.html
- Technical issues related to the NETCONF protocol are discussed on the NETCONF WG mailing list. Refer to the instructions on the WEB page for joining the mailing list.
NETMOD Working Group
- http://www.ietf.org/html.charters/netmod-charter.html
- Technical issues related to the YANG language and YANG data types are discussed on the NETMOD WG mailing list. Refer to the instructions on the WEB page for joining the mailing list.

Conventions Used in this Document

The following formatting conventions are used throughout this document:

Documentation Conventions

Convention	Description
--foo	CLI parameter foo
<foo>	XML parameter foo
foo	yangcli command or parameter
$FOO	Environment variable FOO
$$foo	yangcli global variable foo
some text	Example command or PDU
some text	Plain text

yangcli User Guide

Program Components

[[Image:]]

Introduction

The yangcli program is a NETCONF over SSH client application. It is driven directly by YANG modules, and provides a simple but powerful application interface for any YANG file. There is no configuration required at all to use any YANG file, although there are some YANG extensions that will be utilized if present.

Features

The yangcli client has the following features:

Automatic support for all NETCONF protocol operations, including several 'short-hand' commands for the most common operations, like <edit-config> and <get-config>.
Automated database locking, unlocking and error cleanup, using the high-level get-locks and release-locks commands.
Automatic, standards-based, server schema synchronization, using the YANG module capability URI information in the <hello> PDU, and the <get-schema> operation:
- For each session, the exact view of the server schema definition tree is created, based on the module capability:
  - module namespace
  - module name
  - module revision date
  - enabled features
  - names of any modules that contain deviations for this module
- The help text and parameter validation for each session will be tailored to the capabilities advertised by the server.
- Parses each potential matching YANG file to make sure the module name, revision date, and namespace URI value are all exactly the same as the values in the module capability URI.
Understands all NETCONF protocol capabilities, and complex hard-wired logic simplifies protocol usage, and allows high-level commands to pick appropriate defaults for many RPC operation parameters.
Load any YANG module at boot-time or run-time and start using it immediately.
Full concurrent support for multiple revisions of the same module.
Supports NETCONF notifications, including :interleave capability.
Full XPath 1.0 and subtree filtering support.
Automatic support for all YANG language mechanisms, including extensions.
Any YANG <rpc> operation is automatically available as a yangcli command.
Uses YANG files directly as input, so no pre-processing or configuration needed to use a new module.
Can be called from unix scripts in 'batch-mode' to automatically establish a NETCONF session, issue a command or invoke a yangcli script, close the session, and return the results.
Extensive interactive shell environment, including user variables, file variables, smart parameter set completion, and a simple scripting environment for automatic operation.
Automatic, context-sensitive (tab key) command-line completion.
Full support for XPath, instance-identifier, leafref, and identityref parameters.
Automatic, context-sensitive help system, based completely on YANG files and using the exact modules supported by the current NETCONF session, if connected.
Full, customizable command line editing, using emacs by default, but vi or a custom set of keystroke bindings are also supported.
Command line history and command recall.
Store and recall command line history files for later use.
Automatic NETCONF session management, including support for all YANG extensions to the <capability> element.
Automatic recognition and support for all NETCONF 'capability' related operations.
Automatic support for all YANG additions to the NETCONF protocol, such as the insert operation
Unlimited nested scripts with up to 10 parameters each can automate testing and other management tasks
User configurable command aliases that can be saved and restored.

Starting yangcli

The current working directory in use when yangcli is invoked is important. It is most convenient to run yangcli from a work directory, rather than the installation directory or within the module library.

The yangcli program can be invoked several ways:

To get the current version and exit:

        yangcli --version

To get program help and exit:

        yangcli --help
        yangcli --help --brief
        yangcli --help --full

To start an interactive session with the default parameters:

        yangcli

To start an interactive session with a new log file:

        yangcli --logfile=mylogfile

To start an interactive session and append to an existing log file:

        yangcli --logfile=mylogfile --log-append

To get parameters from a configuration file:

        yangcli --config=~/yangcli.conf

To begin to connect to a server upon startup, provide the --server parameter. The connect command will be started upon startup and the user will be prompted to enter the rest of the mandatory parameters to the connect command.

        yangcli server=myserver.example.com

To connect to a server and automatically connect without any interactive interruption, enter the --server, --user, and --password parameters. A session startup will be attempted right away, using these parameters. Any optional parameters for the connect command (--port or --timeout) may be entered as well. All parameters can be entered from a config file, and/or the command line.

        yangcli --server=myserver.example.com \
            --user=andy --password=yangrocks

To automatically connect to a server, run a script in non-interactive mode, and then remain connected to the server, add the --run-script parameter to the connection parameters. The --runpath parameter can also be entered, if needed.

        yangcli --server=myserver.example.com \
            --user=andy --password=yangrocks \
            --run-script=mytestscript

To automatically connect to a server, run a script in non-interactive mode, and then exit the program, add the --batch-mode and --run-script parameters to the connection parameters. The --runpath parameter can also be entered, if needed.

        yangcli --server=myserver.example.com \
            --user=andy --password=yangrocks \
            --run-script=mytestscript --batch-mode

To automatically connect to a server, and run a single command instead of a script, and then exit, use the --run-command parameter instead of the --run-script parameter. The --batch-mode parameter can be left out to remain in the current session (in interactive mode) after the command is invoked.

        yangcli --server=myserver.example.com \
            --user=andy --password=yangrocks \
            --batch-mode --run-command=”sget /system”

Stopping yangcli

To terminate the yangcli program, use the quit command.

The control-C character sequence will also cause the program to be terminated.

Statements

The yangcli script interpreter accepts several types of statements:

yangcli Statements

type	description	example
command	invoke a local command and/or send an <rpc> to the server	sget /system
variable assignment	set a user variable to some value	$system = sget /system
file assignment	set the contents of a file to some value	@save.txt = $system
variable deletion	delete a user variable or clear a system variable	$system =

A command can be as simple like 'get' or complex, like 'edit-config'.

A variable assignment sets the specified user or system variable to the right hand side of the expression. An expression has many forms, including the result from a local command or a remote NETCONF operation.

If a string that matches a command is used as the assignment value, then it must be entered in quotes (single or double). For example, the $$default-operation system configuration variable accepts enumeration values which also match RPC commands:

yangcli> $$default-operation = 'merge'

A file assignment is essentially the same as a variable assignment, except the right hand side of the expression is saved in the specified file, instead of a user variable.

To delete a user variable, leave the right hand side of the expression empty (or just whitespace).

Note: More statement types will be available in the next release.

Commands

The yangcli program has several built-in commands, defined in yangcli.yang, yuma-netconf.yang, and notifications.yang.

The YANG rpc statement is used to define the syntax and behavior of each command.

There are 2 types of yangcli commands:

local: the command is executed within the yangcli application, and can be invoked at any time.
remote: the command is executed on the remote server, and is only available when a NETCONF session is active. Any YANG rpc statement that yangcli does not recognize as a local command is treated as a remote command available on the server.

Local Commands

command	description
alias	Show or set a specific yangcli command alias
aliases	Manage the yangcli command aliases
cd	Change the current working directory
connect	Connect to a server and start a NETCONF session
elif	Start an 'else-if' conditional block
else	Start an 'else' conditional block
end	End an 'if' or 'while' block
eval	Evaluate an XPath expression
eventlog	View or clear the notification event log
fill	Fill a user variable
help	Get context-sensitive help
history	Manage the command history buffer
if	Start an 'if' conditional block
list	List modules, objects, or other properties of the session
log-debug	Log a debug message
log-error	Log an error message
log-info	Log an info message
log-warn	Log a warning message
mgrload	Load a YANG file into the client only
pwd	Print the current working directoty
quit	Exit the program
recall	Recall a line from the command history buffer
run	Run a script
show	Show variables and objects currently available
start-timer	Start a script timer
stop-timer	Stop a script timer and display the elapsed time
unset	Remove a command alias from memory
uservars	Manage the yangcli user variables
while	Start a 'while' conditional loop block

The following table shows the standard NETCONF protocol operations that are directly available for use, depending on the capabilities of the server.

Standard NETCONF Commands

command	description
cancel-commit	Cancel the current confirmed commit procedure
close-session	Close the current NETCONF session
commit	Make the candidate database be the running config
copy-config	Copy an entire NETCONF database
create-subscription	Start receiving NETCONF notifications
delete-config	Delete an entire NETCONF database
discard-changes	Discard any edits in the candidate database
edit-config	Alteration of the target database
get	Filtered retrieval of state data and running config
get-config	Filtered retrieval of any NETCONF database
get-schema	Get a data model definition file from the server
kill-session	Force close another NETCONF session
lock	Lock a NETCONF database that is currently unlocked
unlock	Unlock a NETCONF database that is currently locked
validate	Validate the contents of a NETCONF database

The following yangcli commands are available for simplified access to standard NETCONF operations

Custom NETCONF Commands

command	description
create	Invoke an <edit-config> create operation
delete	Invoke an <edit-config> delete operation
get-locks	Lock all the databases with the <lock> operation
insert	Invoke an <edit-config> YANG insert operation
merge	Invoke an <edit-config> merge operation
release-locks	Unlock all the locked databases with the <unlock> operation
remove	Invoke an <edit-config> remove operation
replace	Invoke an <edit-config> replace operation
save	Save the current edits on the server in NV-storage
sget	Invoke a <get> operation with a subtree filter
sget-config	Invoke a <get-config> operation with a subtree filter
xget	Invoke a <get> operation with an XPath filter
xget-config	Invoke a <get-config> operation with an XPath filter

The following table shows the extended NETCONF protocol operations that are available on the netconfd server only.

Extended netconfd Commands

command	description
get-my-session	Retrieve session customization parameters
load	Load a module into the server.
no-op	No operation.
restart	Restart the server.
set-log-level	Set the server logging verbosity level.
set-my-session	Set session customization parameters.
shutdown	Shutdown the server.

Variables

The yangcli program utilizes several types of user-accessible variables. These variables can be listed with the 'show vars' command and other commands as well.

A variable reference consists of 1 or 2 dollar signs ('$'), followed immediately by a valid identifier string (e.g., $$global-log or $local-log).

Variables can be 1 or more characters in length, and follow the YANG rules for identifier names. The first character must be a letter, 'A' to 'Z', or 'a' to 'z'. The 2^nd to last characters can be a letter 'A' to 'Z', or 'a' to 'z', number ('0' to '9'), an underscore ('_'), a dash ('-'), or a period ('.') character.

There are 4 categories of parameters supported:

Read-only system variables
Read-write system variables
Read-write global user variables (saved in $HOME/.yuma directory)
Read-write local user variables

It is an error if a variable is referenced (in the right-hand-side of a statement) that does not exist.

The first 3 types are global variables, which means that they are available to all run-levels of all scripts. The last type, called a local variable, is only visible to the current run-level of the current script (or interactive shell). Refer to the following section for more details on run levels.

Variable Syntax

syntax	description	example
$$<variable-name>	Left hand side: set the global variable to some value	$$saved_get = get
$$<variable-name>	Right hand side: access the value of a global variable	fill --target=\ $$mytarget
$<variable-name>	Left hand side: set the local variable to some value	$myloglevel = \ $$log-level
$<variable-name>	Right hand side: access the value of any variable with this name (try local, then global)	$myuser = $user

The following table shows the unix environment variables that are available as read-only global variables in yangcli. These variables are set once when the program is started, and cannot be used in the the left hand side of an assignment statement.

Read-only system variables

variable	description
$$HOME	the HOME environment variable
$$HOSTNAME	the HOST or HOSTNAME environment variable
$$LANG	the LANG environment variable
$$PWD	the PWD environment variable, when yangcli was invoked
$$SHELL	the SHELL environment variable
$$USER	the USER environment variable
$$YUMA_DATAPATH	the YUMA_DATAPATH environment variable
$$YUMA_HOME	the YUMA_HOME environment variable
$$YUMA_MODPATH	the YUMA_MODPATH environment variable
$$YUMA_RUNPATH	the YUMA_RUNPATH environment variable

The following table shows the CLI configuration parameters that can be read or changed (but not deleted). If a particular parameter was not set during program invocation, then the associated variable will contain the empty string.

Read-write system variables

variable	description
$$alt-names	the –alt-names configuration parameter
$$autocomp	the --autocomp configuration parameter
$$autoload	the --autoload configuration parameter
$$baddata	the --baddata configuration parameter
$$default-module	the --default-module configuration parameter
$$default-operation	the <default-operation> parameter for the <edit-config> operation
$$display-mode	the --display-mode configuration parameter
$$error-option	the default <error-option> parameter for the <edit-config> operation
$$fixorder	the --fixorder configuration parameter
$$indent	the –indent configuration parameter
$$log-level	the --log-level configuration parameter
$$match-names	the –match-names configuration parameter
$$optional	the --optional configuration parameter
$$server	the --server configuration parameter
$$test-option	the <test-option> parameter for the <edit-config> operation
$$time-rpcs	the –time-rpcs configuration parameter
$$timeout	the --timeout configuration parameter
$$use-xmlheader	the –use-xmlheader configuration parameter
$$user	the --user configuration parameter
$$with-defaults	the --with-defaults configuration parameter

Read-write global user variables

If a unrecognized global variable (e.g., $$foo) is used in the left-hand side of an assignment statement, then a global user variable will be created with that name. If the global user variable already exists, then its value will be overwritten.

The uservars command can be used to load or store these variables so they are loaded at boot-time. By default, the XML file used to store these variables is $HOME/.yuma/yangcli_uservars.xml.

Read-write local user variables

If a local variable (e.g., $foo) is used in the left-hand side of an assignment statement, then a local user variable will be created with that name. If the local user variable already exists, then its value will be overwritten. If the variable is created within a script (i.e., run-level greater than zero), then it will be deleted when the script exits.

Files

File contents can be used in yangcli statements, similar to user variables.

A file reference consist of the 'at-sign' character ('@') followed immediately by a valid file specification.

    @foo.yang = get-schema --identifier=foo --version=”” --format=”YANG”

    mgrload --module=foo

If the file extension is “.yang”, “.log”, “.txt”, or “.text”, then the value (or command output) will be saved, and yangcli will strip off the outermost XML (if needed) to save the requested file as a pure text file. Otherwise, the file will be saved in XML format. The display mode set by the user can affect XML output. If the display mode i s'xml-nons' then XML without namespace (xmlns) attributes will be generated instead of normal XML.

Note: The --display-mode configuration parameter, and $$display-mode system variable, only affect the output and display of data in the yangcli program. NETCONF protocol messages are always sent in 'xml' mode.

Files may also be used as parameter replacements, within a command.

    $saved_get = get --filter=@filter.xml --with-defaults=explicit

It is an error if the file referenced does not exist or cannot be read.

Scripts

Any command can be entered at the interactive shell, or stored in a script file, and invoked with the 'run' command. Scripts are simply text files, and the extension used does not matter.

There are no formal templates for scripts, like there are for RPC operations, at this time. Instead, positional parameters can be passed to any script.

The parameters named --P1 to --P9 allow up to 9 parameters to be passed to any script. Within each script, the numbered parameters '$1' to '$9' are available, and contain the value that was passed as the corresponding ---Pn” parameter when calling the script.

If a line contains only optional whitespace, followed by the pound sign character '#', then the line is treated as a comment. These lines will be skipped.

If an error occurs during a command within a script, or an <rpc-error> is received from the server during a NETCONF session, then the running script will be canceled, and if this was a nested script, then all parent scripts will also be canceled.

Script Example:

    run connect --P1=andy --P2==localhost --P3=yangrocks

    // connect script
    # start a NETCONF session
    $user = $1
    $server = $2
    $password = $3

    connect --user=$user --server=$server --password=$password

Run Levels

The run command can appear in a script.

When yangcli starts up, either in interactive mode or in batch mode, the script interpreter is at run level zero. Each time a run command is invoked, either at the command line or within a script currently being invoked, a new run level with the next higher value is assigned. Local variables are only visible within the current run level.

A maximum of 512 run levels are supported in yangcli.

Scripts can be called recursively, but a stop condition needs to be used to break the recursion (e.g., call the script from within a conditional code block.

Conditional Command Blocks

The 'if', 'elif', 'else', and 'end' commands are used to create an 'if command sequence'.

Any other commands that appear between these commands are part of a conditional command block.

These blocks can be nested. The current conditional state is inherited, so an if command sequence within a false conditional block will not be executed. A block can contain zero or more command lines,

These command work exactly like an 'if' expression within a program language such as Python. Note that indentation is not significant, but it may be used to make scripts more readable.

The 'if' command starts a new if-command sequence. It is followed by a conditional command block. This block ends when an 'elif', 'else', or 'end' command within the same if command block is encountered.

At most, only one conditional code block within the if command sequence will be executed. Once a conditional command block has been exectuted, any remaining blocks will be skipped.

All user and system variables that are available to the current script run level can be used within the XPath expressions for determining the conditional block state (true or false).

Conditional Command Loop Blocks

The 'while' and 'end' commands are used to create an 'while loop sequence'.

Any other commands that appear between these commands are part of a conditional command loop block.

These blocks can be nested. The current conditional state is inherited, so a while loop sequence within a false conditional block will not be executed. A block can contain zero or more command lines,

The loop condition can be a constant expression. The maxloops parameter will prevent infinite looping, and can be utilized to use the while loop sequence as a simple 'for' loop, iterating a specific number of times.

All user and system variables that are available to the current script run level can be used within the XPath expressions for determining the conditional block state (continue or terminate loop).

Sample Script

The following script does not do any useful work.

It is provided to demonstrate some simple constructs.

$x = 0
while '$x < 2'
  # this is a comment
  log-info 'start 1'
  $x = eval '$x + 1'
  $y = 0
  while '$y < 4'
    log-info 'start 2'
    $y = eval '$y + 1'
    if "module-loaded('test')"
      log-info 'module test loaded'
    elif '$x > 1'
      log-info 'x>1'
    elif "feature-enabled('test3', 'feature1')"
      log-info 'feature1'
    else
      log-info 'else'
    end
    log-info 'end 2'

  end
  log-info 'end 1'
end
if "feature-enabled('test5', 'feature-foo')"
  log-info 'feature-foo'
  run add-foo-parms
end

Configuration Parameter List

The following configuration parameters are used by yangcli. Refer to the CLI Reference for more details.

yangcli CLI Parameters

parameter	description
--aliases-file	Specifies the command aliases file to use.
--alt-names	Controls whether alternate names will be checked for UrlPath searches.
--autoaliases	Controls automatic loading and saving of the command aliases
--autocomp	Controls whether partial commands are allowed or not.
--autohistory	Controls whether th command line history buffer will be automatically loaded at startup and saved on exit.
--autoload	Controls whether modules used by the server will be loaded automatically, as needed.
--autouservars	Controls automatic loading and saving of the global user variables
--bad-data	Controls how bad data about to be sent to the server is handled.
--batch-mode	Indicates the interactive shell should not be used.
--config	Specifies the configuration file to use for parameters.
--datapath	Sets the data file search path.
--default-module	Specifies the default module to use to resolve identifiers.
--deviation	Species one or more YANG modules to load as deviations.`
--display-mode	Specifies how values should be displayed.
--echo-replies	Controls whether RPC replies will be displayed in the log output, if log-level >= 'info'
--feature-disable	Leaf list of features to disable
--feature-enable	Specifies a feature that should be enabled
--feature-enable-default	Specifies if a feature should be enabled or disabled by default
--fixorder	Controls whether PDUs are changed to canonical order before sending them to the server.
--force-target	Controls whether the candidate or running configuration datastore will be used as the default edit target, when both are supported by the server.
--help	Get program help.
--help-mode	Adjust the help output (--brief or --full).
--home	Override the $HOME environment variable.
--indent	Specifies the indent count to use when writing data.
--log	Specifies the log file to use instead of STDOUT.
--log-append	Controls whether a log file will be reused or overwritten.
--log-level	Controls the verbosity of logging messages.
--match-names	Match mode to use for UrlPath searches
--modpath	Sets the module search path.
--module	Specifies one or more YANG modules to load upon startup.
--ncport	Specifies the NETCONF server port number to use in the connect command.
--password	Specifies the password to use in the connect command.
--private-key	Contains the file path specification for the file containing the client-side private key.
--protocols	Controls which NETCONF protocol versions will be enabled
--public-key	Contains the file path specification for the file containing the client-side public key.
--runpath	Sets the executable file search path.
--run-command	Specifies the command to run at startup time.
--run-script	Specifies the script to run at startup time.
--server	Specifies the server address to use in the connect command.
--subdirs	Specifies whether child sub-directories should be searched when looking for files.
--time-rpcs	Measure the round-trip time of each <rpc> request and <rpc-reply> at the session level.
--timeout	Specifies the timeout to use in the connect command.
--transport	Specified the transport protocol to use (ssh or tcp)
--use-xmlheader	Specifies how file result variables will be written for XML files. Controls whether the XML preamble header will be written or not.
--user	The default user name for NETCONF sessions.
--uservars-file	Specifies the global user variable files to load.
--version	Prints the program version and exits.
--warn-idlen	Controls how identifier lengths are checked.
--warn-linelen	Controls how line lengths are checked.
--warn-off	Suppresses the specified warning number.
--yuma-home	Specifies the $YUMA_HOME project root to use when searching for files.

Invoking Commands

Commands can be entered with parameters:

in one continuous line

merge target=/toaster/toastControl --value=”down”

in several lines (using line continuation)

merge target=/toaster/toastControl \
 --value=”down”

interactively prompted for each parameter

merge
  (will be prompted for target and value)

a combination of the above

merge target=/toaster/toastControl
  (will be prompted for value)

When a command is entered, and the yangcli script interpreter is running in interactive mode (--batch-mode not active), then the user will be prompted for any missing mandatory parameters.

If the --optional parameter is present (or the $$optional system variable is set to 'true'), then the user will be prompted for any optional parameters that are missing.

A command has the basic form:

<name (QName)> <parameter (any YANG type)>*

The command name is a qualified name matching the name used in the YANG rpc statement. This is followed by zero or more parameters (in any order).

A command parameter has the same syntax as a CLI configuration parameter.

The command name syntax is described below.

An un-escaped end-of-line character ('enter key') terminates command line input.

Command Prompt

The yangcli command prompt changes, depending on the context.

Idle Mode:

If the script interpreter is idle and there is no NETCONF session active, then the prompt is simply the program name:

    yangcli>

If the script interpreter is idle and there is a NETCONF session active, then the prompt is the program name, followed by ' <user>@<server>', depending on the parameters used in the connect command:

    yangcli andy@myserver>

Continuation Mode:

If a backslash, end-of-line sequence ended the previous line, the prompt will simply be the word 'more' indented 3 spaces:

    yangcli andy@myserver> get \
       more>

The 'more>' prompt will continue if the new line also ends in with an escaped end-of-line. When a new line is finally terminated, all the fragments are spliced together and delivered as one command line.

Note: context-sensitive command completion is not available in this mode.

Choice mode:

If a partial command has been entered in interactive mode, and the script interpreter needs to prompt for a YANG 'choice' parameter, then a list of numbered cases will be presented, and the prompt will be the same as it was before (depending on whether a NETCONF session is active or not), except a colon character (':'), followed by the command name, will be added at the end. As long as parameters for the same command are being entered (i.e., prompted for child nodes within a selected case, the command name will be appended to the prompt.

yangcli andy@myserver> sget

Enter a number of the selected case statement:

  1: case varref: 
       leaf varref 
  2: case from-cli: 
       leaf target 
       leaf optional 
       anyxml value

Enter choice number [1 - 2]: 
yangcli andy@myserver:sget>

Parameter mode:

If a partial command has been entered in interactive mode, and the script interpreter needs to prompt for a leaf or leaf-list, then the parameter name will appear in angle brackets ('<' and '>').

Filling mandatory case /sget/input/from/from-cli: 
Enter string value for leaf <target> 
yangcli andy@myserver:sget>

If the 'ncx:password' extension is part of the YANG definition for the leaf or leaf-list, then the characters entered at the prompt in this mode will not be echoed, and they will not be saved in the command history buffer. Any default value will not be printed either. Instead, 4 asterisks '****' will be printed, even though the correct value will be used in the command.

If a default value is available, it will appear in square brackets ('[' and ']'). In this case, entering 'return' will not be interpreted as an empty string, but rather the default value that was presented.

yangcli> connect

Enter string value for leaf <user> [andy] 
yangcli:connect>

Enter string value for leaf <server> [myserver] 
yangcli:connect>

Enter string value for leaf <password> [****] 
yangcli:connect> 
Enter uint16 value for leaf <port> [830]

yangcli:connect> 
Enter uint32 value for leaf <timeout> [30]

yangcli:connect>

Note: After a NETCONF session is terminated for any reason, the connection parameters will be remembered , and presented as defaults the next time the connect command is entered.

False Conditional Block Mode

If a conditional command (if, elif, else, or while command) is active, but the conditional expression is false, then any commands defined within that conditional block will not be executed. If this occurs in interactive mode instead of a script, the string '[F]' will be added to the command prompt. Note that the 'help' and 'log-info' commands do not get executed in the following example:

yangcli> if 0

yangcli[F]> help

yangcli[F]> log-info 'this will not get printed'

yangcli[F]> end

yangcli>

Command Name

The command name can be entered with or without an XML prefix:

yangcli andy@myserver> nc:get
yangcli andy@myserver> get

If there is a prefix (e.g., 'nc:get'), then it needs to be one of the XML prefixes in use at the time. Use the 'show modules' command to see the modules and prefixes in use. The YANG prefix will usually be the same as the XML prefix, but not always.

XML prefixes are required to be unique, so if any 2 YANG modules pick the same prefix, then 1 of them has to be changed for XML encoding purposes.

If the --default-module configuration parameter (or $$default-module system variable) is set, it will be used to resolve a command name without any prefix, if it is not a NETCONF or yangcli command.

An error message will be printed if the command entered cannot be found in any YANG module, or if there are multiple commands that match the same string.

ncx:default-parm Extension

Each command may define a default parameter, by placing an 'ncx:default-parm' extension in the rpc input section in the YANG rpc statement. This extension allows less typing in yangcli to accomplish the same thing.

If the script interpreter encounters a string in the command line that is not a recognized parameter for that command, and there is a default parameter defined, then the string will be used as a value for the default parameter.

For example, the 'show' parameter is the default parameter for the 'history' command, so both of these commands will be interpreted to mean the same thing:

    history --show=10
    history 10

Note: the default parameter does not allow the wrong form of a parameter type to be entered, to accept the default for that parameter. For example, the 'show' parameter above has a default value of '25':

    # this is the same as history show=25
    history

    # this is an error, not the same as the above
    history show

The following table shows the default parameters that are available at this time.

Default Parameters

command	default parameter
alias	var
aliases	show
cd	dir
connect	server
create	target
elif	expr
else	expr
if	expr
eventlog	show
fill	target
help	command
history	show
insert	target
load	module
log-debug	msg
log-error	msg
log-info	msg
log-warn	msg
merge	target
mgrload	module
recall	index
replace	target
run	script
set-log-level	log-level
sget	target
sget-config	target
xget	select
xget-config	select
while	expr

Parameter Mode Escape Commands

There are 4 escape sequence commands that can be used while entering parameters.

They all begin with the question mark character ('?'), and end with the 'Enter' key.

Control key sequences are not used because that would interfere with command line editing keys.

Parameter mode escape sequences

escape sequence	description
?	Print some help text
??	Get all available help text
?s	Skip this parameter
?c	Cancel this command

Note: If the current parameter is considered hidden (ncx:hidden extension used in the YANG definition), then no help will be available for the parameter, even though it is accessible. This also apples to the help command. Any command or parameter designated as ncx:hidden will be treated as an unknown identifier, and no help will be given.

Note: Skipping mandatory nodes with the '?s' command is affected by the --bad-data configuration parameter and $$bad-data system variable. An error, warning, or confirmation check may occur. Refer to the CLI Reference for more details.

Note: If there are any YANG defined values (e.g., enumeration, bits, default-stmt) available for the current parameter, then pressing the tab key will list the full or partial completions available.

Using XPath Expressions

There are some command parameters, such as the --target parameter for the create command, that accept XPath absolute path expressions.

If prefixes are present, then they must match the set of XML prefixes in use at the time. Use the show modules command to see the current set of prefixes.

If prefixes are not used, then the first available matching XML namespace will be used instead.

If the starting forward slash character ('/') is missing, then it will be added.

    # these are all the same value
    yangcli:fill> system
    yangcli:fill> /system
    yangcli:fill> /sys:system

It is important to remember 2 simple rules to avoid common errors in XPath expressions:

String constants must be quoted with single quote characters.The expression [name=fred] is not the same as [foo='fred'].The former compares the 'name' node value to the 'fred' node value.The latter compares the 'name' node value to the string 'fred'.
The double quote character ('”') is not allowed in XPath --select parameter expressions because the expression will be sent to the server inside a double-quoted string.

If an incomplete XPath absolute path expression is entered, and the script interpreter is in interactive mode, then the user will be prompted to fill in any missing mandatory nodes or key leafs.

    # complete form of ifMtu leaf
    yangcli:fill> /interfaces/interface[name='eth0']/ifMtu
    # incomplete form of ifMtu leaf

    yangcli:fill> /interfaces/interface/ifMtu

    Filling key leaf <name>:
    Enter string value:

The --select parameter for the xget and xget-config commands accepts full XPath expressions. The expression must yield a node-set result in order to be used as a filter in NETCONF get and get-config operations.

One of the simplest XPath filters to use is the descendant-or-self filter ('//<expr>').

For example, this command will retrieve all instances of the 'ifMtu' leaf:

    xget //ifMtu

When interface (or any list) entries are returned by netconfd, they will contain the the entire path back to the root of the YANG module, not just the specified node. Also, any key leafs within a list are added. This is only done if the XPath expression is missing any predicates for key leafs.

This is different than XPath 1.0 as used in XSLT. Since NETCONF get and get-config operations return complete XML instance documents, not node-sets, the ancestor nodes and naming nodes need to be added.

    # reply shown with --display-mode=plain
    data {
       interfaces {
             interface eth0 {
            name eth0
            ifMtu 1500
          }
             interface eth1 {
            name eth1
            ifMtu 1518
          }
       }
    }

Special Parameter Handling

Some special handling of YANG data structures is done by the script interpreter.

Containers

Some parameters, such as the --source and --target parameters in many commands, are actually represented as a container with a single child -- a choice of several leaf nodes. In this situation, just the name of the desired leaf node can be entered (when in idle mode), as the 'contents' of the container parameter.

    sget-config /system source=candidate

Choices and Cases

If a parameter name exact-match is not found, and a partial match is attempted, then choice and case node names will be ignored, and not cause a match.

Since these nodes never appear in the XML PDUs they are treated as transparent nodes (wrt/ parameter searches) unless they are specified with their full name.

Parameters that are a choice of several nodes, similar to above, except without a parent container node, (e.g., --help-mode) can be omitted. The accessible child nodes within the case nodes can be entered directly (e.g., sget --target parameter).

# this is not allowed because 'help-mode' is not complete
yangcli> help --command=help --help-mo=brief

# this is allowed because 'help-mode' is complete,
# even though help-mode is a choice and 'brief' is
# an empty leaf
yangcli> help help help-mode=brief

# choice and case names are transparent when
# searching for parameter names, so the
# following command is the same as above
yangcli> help help brief

Lists and Leaf-Lists

When filling a data structure and a descendant node is entered, which is a YANG list or leaf-list, then multiple entries can be entered. After the node is filled in, there will be a prompt (Y/N, default no) to add more list or leaf-list entries.

Binary Data Type

The YANG binary data type is supported. Parameters of this type should be entered in plain text and they will be converted to binary format.

Command Completion

The 'tab' key is used for context-sensitive command completion:

If no command has been started, a list of available commands is printed
If a partial command is entered, a list of commands which match the characters entered so far is printed
If a command is entered, but no parameters, then a list of available parameters is printed
If a command is entered, and the cursor is within a command name, then a list of parameters which match the characters entered so far is printed
If a command is entered, and the cursor is after a command name, but not within a value string, then a list of available parameters is printed
If a command is entered, and the cursor is within a command value, then a list of possible values which match the characters entered so far is printed. Note that not all data types support value completion at this time.
If no values are available, but a default value is known, that value will be printed
If a session is active, and whitespace followed by the forward slash '/' character is entered, a list of top-level data node names is printed. Once a top-level name and a trailing slash '/' character is entered, pressing the tab key again will print the names of the child nodes of the current data node. Only schema-node strings are supported at this time. Auto-completion will not work if predicates are present in the absolute path expression.

Command list example: no NETCONF session is active:

    yangcli> <hit tab key>
    cd       fill     history  mgrload  quit     run      
    connect  help     list     pwd      recall   show

Command list example: NETCONF session is active

    yangcli andy@myserver.example.com> <hit tab key>
    cd                   get-schema           recall 
    close-session        help                 replace 
    commit               history              restart 
    connect              insert               run 
    copy-config          kill-session         save 
    create               list                 sget 
    create-subscription  load                 sget-config 
    delete               load-config          show 
    delete-config        lock                 shutdown 
    discard-changes      merge                unlock 
    edit-config          mgrload              validate 
    fill                 no-op                xget 
    get                  pwd                  xget-config 
    get-config           quit

Command Line Editing

The command line parser is based on libtecla, a freely available library.

The home page is located here:

http://www.astro.caltech.edu/~mcs/tecla/

The complete user guide for configuring libtecla is located here:

http://www.astro.caltech.edu/~mcs/tecla/tecla.html

If the file $HOME/.teclarc exists, then libtecla will use it to configure the key bindings.

By default, libtecla uses emacs key bindings. There is no need for any further libtecla configuration if emacs mode is desired.

In order to use the vi editor key bindings, the $HOME/.teclarc file must exist, and it must contain the following line:

        edit-mode vi

Custom key bindings are also available. Refer to the libtecla documentation for more details on command line editing key customization.

The control key sequence (^F == control key and f key at the same time). The letter is not case-sensitive, so ^F and ^f are the same command.

The alt key sequence (M-f == alt key and f key at the same time). The letter is not case-sensitive, so M-F and M-f are the same command.

The following table shows the the most common default key bindings:

Common editing key bindings

command	description
^F	cursor right
^B	cursor-left
^A	beginning of line
^E	end of line
^U	delete line
M-f	forward-word
M-b	backward word
^P	up history
^N	down history

Command History

Each command line is saved in the command history buffer, unless a password is being entered in parameter mode.

By default, the previous history line (if any) will be shown if the ^P key is pressed.

By default, the next history line (if any) will be shown if the ^N key is pressed.

In addition, the history command can be used to control the command line buffer further. This command has 4 sub-modes:

show: show maximum of N history entries (default is 25)
clear: clear the history buffer
save: save the history buffer to a file
load: load the history buffer from a file

By default, the command line history buffer is loaded when the program starts, and saved when the program exits. This behavior can be turned off by setting the --autohistory configuration parameter to 'false'.

The '!' character is special when editing commands. If the first character is '!', and it is followed by a number or a non-zero character, the line will be interpreted as a recall request:

yangcli> !42 == recall command number 42 (same as recall 42)
yangcli> !get == recall the most recent command line starting with 'get'

Refer to the Command Reference section for more details on the history command.

Command Responses

The command output and debugging messages within yangcli is controlled by the current log level (error, warn, info, debug, debug2, debug3).

If a command is executed by the script interpreter, then a response will be printed, depending on the log level value.

If the log level is 'info' or higher, and there were no errors and no response, then the string 'OK' is printed.

    yangcli> $foo = 7
       OK
    yangcli>

If the log-level is set to 'error' or 'warn', then the 'OK' messages will be suppressed.

If the log level is set to 'debug' or higher, then responses from the server will be echoed to the log (file or STDOUT). The current display mode will be used when printing data structures such as <rpc-error> and <notification> element contents.

If an error response is received from the server, it will always be printed to the log.

yangcli andy@myserver> create /system

Filling container /system: 
RPC Error Reply 5 for session 8:

rpc-reply { 
   rpc-error { 
      error-type application 
      error-tag access-denied 
      error-severity error 
      error-app-tag limit-reached 
      error-path /nc:rpc/nc:edit-config/nc:config/sys:system 
      error-message 'max-access exceeded' 
   } 
}

yangcli andy@myserver>

Refer the the --log-level parameter in the CLI Reference for more details.

NETCONF Sessions

The yangcli program can be connected to one NETCONF server at a time.

Run multiple instances of yangcli to control multiple agents at once.

Use the connect command to start a NETCONF session.

This section explains how to use yangcli to manage a NETCONF server, once a session is established.

When a NETCONF session starts up, a <capability> exchange is done, and the server reports exactly what content it supports. This information is used extensively to customize the session, and report errors and warnings for the session.

Connection Startup Screen

If the --log-level is set to 'info' of higher, then a startup screen will be displayed when a NETCONF session is started. It contains:

startup banner
client session ID
server session ID
protocol capabilities supported by the server
- Includes revision-date of supported module
YANG modules supported by the server
- Includes any features and deviations supported in the module
Enterprise specific capabilities supported by the server
Default target database (<candidate> or <running>)
Save operation mapping for the server
with-defaults reporting capability reported by the server

The following example shows a typical startup screen connecting to the netconfd server:

NETCONF session established for andy on myserver

Client Session Id: 1 
Server Session Id: 8

Server Protocol Capabilities 
   Protocol Version: RFC 4741 
   candidate:1.0 
   rollback-on-error:1.0 
   validate:1.0 
   xpath:1.0 
   notification:1.0 
   interleave:1.0 
   with-defaults:1.0 
   netconf-monitoring:1.0 
   schema-retrieval:1.0

Server Module Capabilities 
   ietf-inet-types@2009-11-10 
   ietf-netconf-monitoring@2009-11-20 
   ietf-with-defaults@2009-07-01 
      Features: 
         with-defaults 
   ietf-yang-types@2009-11-10 
   nc-notifications@2008-07-14 
   notifications@2008-07-14 
   test@2009-12-26 
      Features: 
         feature1 
         feature3 
         feature4 
   yuma-app-common@2010-01-25 
   yuma-interfaces@2009-11-21 
   yuma-mysession@2009-08-11 
   yuma-nacm@2009-11-21 
   yuma-ncx@2009-12-21 
   yuma-proc@2009-11-21 
   yuma-system@2009-12-27 
   yuma-types@2010-01-25

Server Enterprise Capabilities 
   None

Default target set to: <candidate> 
Save operation mapped to: commit 
Default with-defaults behavior: explicit 
Additional with-defaults behavior: trim:report-all

Checking server Modules...

yangcli andy@myserver>

Server Tailored Context

[[Image:]]

While a NETCONF session is active, the set of available YANG modules will be set to the modules that the server is using, if the --autoload configuration parameter is enabled.

If the :schema-retrieval capability is also available on the server, then the <get-schema> operation will be attempted for any YANG module specified in the <hello> message capabilities, but not available to the yangcli program.

When the server module capabilities are analyzed by the yangcli client, the entire YANG module search path is checked for the specific module advertised in the capability. All the modules are partially parsed to check the actual namespace and revision date values. The following fields must exactly match in order for yangcli to use a local YANG module, if --autoload=true.

module name
module revision date (if any)
module namespace

If the namespace URI value is different, it indicates that there is either a bug in one of the conflicting YANG modules, or that two different naming authorities picked the same module name. In this case, a warning will be generated during session initialization.

Any data returned from the server for YANG modules not currently available will be treated as a YANG 'anyxml' node, instead of the (unknown) YANG data type.

If the module contains YANG features that are not advertised in the <capabilities> exchange, then those data definitions will not be available (by default) for use in yangcli commands.

If the module contains an object with a 'when' statement, and the 'when' XPath expression evaluates to 'false', then that data definition will not be available (by default) for use in yangcli commands.

The help command will be tailored to the modules, capabilities, features, and module deviations reported by the server in <capability> exchange.

Retrieving Data

There are 6 commands available to retrieve generic data (i.e., an arbitrary subset of an entire NETCONF database):

command	description
get	raw NETCONF <get> operation
get-config	raw NETCONF <get-config> operation
sget	high-level subtree filter, using the <get> protocol operation
sget-config	high-level subtree filter, using the <get-config> protocol operation
xget	high-level XPath filter, using the <get> protocol operation
xget-config	high-level XPath filter, using the <get-config> protocol operation

All the high-level retrieval operations support the $$with-defaults system variable. The <with-defaults> parameter will be added the the NETCONF PDU if this variable is set to a value other than 'none' (the default). This system variable will be used as the default if not entered directly.

sget /system --with-defaults=$$with-defaults

This parameter can also be specified directly, each time the command is used.

xget-config //ifMtu --with-defaults=trim

The $$bad-data system variable is used to control how invalid operations and data are sent to the server. The xget and xget-config commands are affected by this parameter. If the :xpath capability was not advertised by the server when the session started, an error or warning may occur if these commands are used.

If any data is received that yangcli does not understand, then a warning message will be printed and the data will be treated as if it was defined with the YANG 'anyxml' data type.

Modifying Data

The following commands are available to modify generic data (i.e., an arbitrary subset of an entire NETCONF database):

command	description
commit	raw NETCONF <commit> operation
create	high-level <edit-config> operation, with nc:operation='create'
delete	high-level <edit-config> operation, with nc:operation='delete'
delete-config	raw NETCONF <delete-config> operation
discard-changes	raw NETCONF <discard-changes> operation
edit-config	raw NETCONF <edit-config> operation
fill	fill a variable for re-use in other operations
insert	high-level <edit-config> operation, with YANG insert operation extensions
lock	lock a NETCONF database
merge	high-level <edit-config> operation, with nc:operation='merge'
replace	high-level <edit-config> operation, with nc:operation='replace'
save	High level save operation, depending on the default target (candidate or running)
unlock	unlock a NETCONF database

All the high-level editing operations use the --target parameter reported by the server when the session started up. If the server did not report the :candidate or :writable-running capabilities, then there will be no writable target, and an error will occur if these commands are entered.

All the high-level editing operations support the $$default-operation system variable. The <default-operation> parameter will be added the the NETCONF <edit-config> PDU if this variable is set to a value other than 'not-used'. The default is the enumeration 'none', which means do not use any default operation, and only use the explicit nc:operation attribute.

All the high-level editing operations support the $$test-option system variable. The <test-option> parameter will be added the the NETCONF <edit-config> PDU if this variable is set to a value other than 'none' (the default). This system variable will be used as the default if not entered directly.

replace /interfaces/interface[name='eth0']/ifMtu \
    --test-option=$$test-option \
    --value=$newvalue

This parameter can also be specified directly, each time the command is used.

$newvalue = 1518

replace /interfaces/interface[name='eth0']/ifMtu \
    --test-option=test-only \
    --value=$newvalue

All the high-level retrieval operations support the $$error-option system variable. The <error-option> parameter will be added the the NETCONF <edit-config> PDU if this variable is set to a value other than 'none' (the default). This system variable will be used as the default if not entered directly.

replace /interfaces/interface[name='eth0']/ifMtu \\
    --error-option=$$error-option \
    --value=1518

This parameter can also be specified directly, each time the command is used.

replace /interfaces/interface[name='eth0']/ifMtu \
    --error-option=rollback-on-error \
    --value=1518

The high level save command is mapped to other commands, depending on the capabilities reported by the server.

save command

capabilities	real command(s)
:candidate	commit
:writable-running	<none>
:startup	copy-config --source=running \ --target=startup

Using Notifications

The create-subscription command is used to start receiving notifications.

The netconfd server will include a <sequence-id> element in any notification that is saved in the replay buffer. This unsigned integer can be used to help debug notification filters (i.e., if non-consecutive <sequence-id> values are received, then the notification was filtered, or dropped due to access control policy).

If any replay notifications are desired, then the --startTime parameter must be included. At the end of the stored notifications, the server will send the <replayComplete> event. This notification type is not saved, and will not be found in the server replay buffer, if replay is supported by the server. The netconfd server will not include a <sequence-id> element in this notification type.

If the notification subscription should stop at a certain time, then the --stopTime parameter must be included. At the end of the stored notifications, the server will send the <replayComplete> event, followed by the <notificationComplete> event. . This notification type is not saved, and will not be found in the server replay buffer, if replay is supported by the server. The netconfd server will not include a <sequence-id> element in this notification type.

Notifications are printed to the log, using the current $$display-mode system variable setting, when and if they are received.

Notifications are also logged. Use the eventlog command to access the notifications stored in the event log.

Configuration Parameters That Affect Sessions

The --server, --user, and --password configuration parameters can be used to start a NETCONF session automatically at startup time. The connect command will only be attempted at startup time if the --server parameter is present.

If all 3 of these parameters are present at startup time, then no interactive prompting for additional optional parameters will be done. Instead the connect command will be invoked right away.

During normal operation, the --optional configuration parameter, or the $$optional system variable, can be used to control interactive prompting for optional parameters.

The --server parameter is saved in the $$server system variable, which can be overwritten at any time. If set, this will be used as the initial default value for the --server parameter in the connect command.

The --fixorder configuration parameter can be used to control XML PDU ordering. If set to 'true', then the PDU will be reordered (if needed),to use the canonical order, according to the YANG specification. If 'false', the order parameters are entered at the command line will be their NETCONF PDU order as well. The default is 'true'. To send the server incorrectly ordered data structures on purposes, set this parameter to 'false'.

The --user parameter is saved in the $$user system variable, which can be overwritten at any time. If set, this will be used as the initial default value for the --user parameter in the connect command.

The --with-defaults configuration parameter, or the $$with-defaults system variable, can be used to set the default value for the 'with-defaults' parameter extension for the NETCONF get, get-config, and copy-config protocol operations. The default is 'none'.

The --error-option configuration parameter, or the $$error-option system parameter, can be used to set the default value for the --error-option parameter for the NETCONF edit-config protocol operation. The default is 'none'.

The --test-option configuration parameter, or the $$test-option system parameter, can be used to set the default value for the --test-option parameter for the NETCONF edit-config protocol operation. The default is 'none'.

The --bad-data configuration parameter, or the $$bad-data system variable, can be used to control how yangcli handles parameter values that are known to be invalid, or usage of optional protocol operations that the current session does not support. The default value is 'check'. To use yangcli in a testing mode to send the server incorrect data on purpose, set this parameter to 'warn' or 'ignore'.

Trouble-shooting NETCONF Session Problems

If the NETCONF session does not start for any reason, one or more error messages will be printed, and the prompt will indicate 'idle' mode. This section assumes that the server is netconfd, and these debugging steps may not apply to all NETCONF agents.

If the NETCONF session does not start:

make sure the server is reachable
- try to 'ping' the server and see if it responds
make sure the SSH server is responding
- try to login in to the server using normal SSH login on port 22
make sure a firewall is not blocking TCP port 830
- try to connect to the NETCONF server using the --port=22 option
make sure the netconf-subsystem is configured correctly in /etc/ssh/sshd_configthere should be the proper configuration commands for NETCONF to work. For example, the netconfd server configuration might look like this:

    Port 22
    Port 830
    Subsystem    netconf    /usr/sbin/netconf-subsystem

make sure the netconfd server is running. Use the unix 'ps' command, or check the netconfd log file, to make sure it is running.

    ps -alx | grep netconf
    (look for 1 'netconfd and N 'netconf-subsystem' -- 1 for
     each active session)

make sure the user name is correct
- This must be a valid user name on the system

make sure the password is correct
- This must be the valid password (in /etc/passwd or /etc/shadow) for the specified user name

If the NETCONF session stops responding:

make sure the server is still reachable
- try to 'ping' the server and see if it responds
make sure the SSH server is still responding
- try to login in to the server using normal SSH login on port 22

If the NETCONF server is not accepting a certain command:

make sure the command (or parameters used in the command) is actually supported by the server.
- There may be features, when statements, or deviation statements that indicate the server does not support the command or one or more of its parameters.
make sure that access control configured on the server is not blocking the command. The error-tag should be 'access-denied' in this case.

If the NETCONF server is not returning the expected data in a <get> or <get-config> protocol operation::

Make sure all the parameters are supported by the server
- the :xpath capability must be advertised by the server to use the 'select' attribute in the <get> or <get-config> operations
- the :with-defaults capability must be advertised by the server to use the <with-defaults> parameter
if using a filter, try to retrieve the data without a filter and see if it is there
make sure that access control configured on the server is not blocking the retrieval. There will not be any error reported in this case. The server will simply skip over any unauthorized data, and leave it out of the <rpc-reply>.
set the logging level to debug2 or higher, and look closely at the PDUs being sent to the server. Set the display mode to a value other than 'plain' to make sure the correct namespaces are being used in the request.

If an <edit-config> operation is failing unexpectedly:

make sure that access control configured on the server is not blocking the request. The error-tag should be 'access-denied' in this case.
make sure an unsupported parameter or parameter value is not used
- <test-option> is not supported unless the :validate capability is advertised by the server
- <error-option> = 'rollback-on-error' is not supported unless the :rollback-on-error capability is advertised by the server
if the request contains an edit to a nested data structure, make sure the parent data structure(s) are in place as expected. The <default-operation> parameter is set to 'none' in the high level editing operations, so any data 'above' the edited data must already exist.
set the logging level to debug2 or higher, and look closely at the PDUs being sent to the server. Set the display mode to a value other than 'plain' to make sure the correct namespaces are being used in the request.

Command Reference

This section describes all the yangcli local and remote commands built-in when using the netconfd server.

There may be more or less commands available, depending on the YANG modules actually loaded at the time.

The specific NETCONF capabilities needed are listed for each remote command. No capabilities are ever needed for a local command.

It is possible that other servers will support protocol operations that netconfd does not support. If yangcli has the YANG file available for the module, then it can be managed with the high level commands. Low-level commands can still be used with external data (e.g., @mydatafile.xml).

Any YANG rpc statement can be used as a remote yangcli command. Refer to the server vendor documentation for details on the protocol operations, database contents, and notification definitions that they support.

alias

The alias command is used to set or display a specific command alias, or display all command aliases if no parameter is given. It is similar to the 'alias' command in unix shells such as 'bash'.

There are 3 forms of the alias command:

alias: display all command aliases in memory
alias <name>: display the command alias with the specified name
alias <name>=<value>: set the command alias with the specified name to the string value

Use the unset command to delete an alias.

alias command

Command type:	local
Default parameter:	var
Min parameters:	0
Max parameters:	1
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

var
- type: string
- usage: optional
- default: none
- The 'var' string must contain either a valid alias name or a string setting an alias. There cannot be any whitespace between the '=' and other characters when setting an alias. The alias value must be quoted if it contains whitespace.
  - A double-quoted string can contain single quotes: alias get-eth0=”xget /interfaces/interface[name='eth0']”
  - A single-quoted string can contain double quotes: alias get-eth0='xget /interfaces/interface[name=”eth0”]'
  - An unquoted string can be used if the <value> does not contain any whitespace: alias gc=get-config

Positive Response:

If no parameter given:
- The current list of command aliases is displayed.
If a <name> parameter given:
- The specified alias is displayed.
If a <name>=<value> parameter is given:
- 'Updated alias foo' if alias foo already exists.
- 'Added alias foo' if this is a new alias

Negative Response:

If no parameter given:
- Not applicable
If a <name> parameter given:
- Error: alias 'foo' not found
If a <name>=<value> parameter is given:
- Error message printed if value is invalid

Usage:

    yangcli> alias get-running=”get-config --source=running”

    Added alias 'get-running'

    yangcli>

aliases

The aliases command is used to load, save, or clear the command aliases, or display all command aliases if no parameter is given.

There are 4 forms of the aliases command:

aliases [show]: display all command aliases in memory
aliases clear: clear all command aliases in memory
aliases save [alias-filespec]: save the command aliases in memory in an '.aliases' file.
aliases load [alias-filespec]: load the command aliases from an '.aliases' file into memory.

aliases command

Command type:	local
Default parameter:	none
Min parameters:	0
Max parameters:	1
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

alias-action
- type: choice
- usage: optional
- default: show
- clear
  - Delete all aliases from memory. This will not affect the aliases file until the 'aliases save' command is used, or the program exits and the –autoaliases parameter is set to 'true'.
- load [alias-filespec]
  - Load an aliases file into memory. If the 'alias-filespec' parameter is not given, then the default aliases file ($HOME/.yuma/.yangcli_aliases) will be used.
- save [alias-filespec]
  - Save the command aliases into memory to an alias file. If the 'alias-filespec' parameter is not given, then the default aliases file ($HOME/.yuma/.yangcli_aliases) will be used.
- show
  - Displays all aliases in memory.

Positive Response:

show:

- The current list of command aliases is displayed.
clear, load, save:
- A status message is displayed.

Negative Response:

An error message is printed if any error occurs.

Usage:

    yangcli> aliases save

    Saved aliases OK to '~/.yuma/.yangcli_aliases'

    yangcli>

cd

The cd command is used to change the current working directory.

cd command

Command type:	local
Default parameter:	dir
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

dir
- type: string
- usage: mandatory
- default: none
- The 'dir' string must contain a valid directory specification

Positive Response:

the new current working directory is printed

Negative Response:

an error message will be printed describing the error

Usage:

    yangcli> cd ~/modules

    Current working directory is /home/andy/modules

    yangcli> cd --dir=$YUMA_HOME

    Current working directory is /home/andy/swdev/yuma/trunk/netconf

    yangcli>

close-session

The close-session command is used to terminate the current NETCONF session. A NETCONF server should always accept this command if it is valid, and not reject it due to access control enforcement or if the server is in notification delivery mode.

close-session command

Command type:	remote
Default parameter:	none
Min parameters:	0
Max parameters:	0
Return type:	status
YANG file:	yuma-netconf.yang

Command Parameters:

none

Positive Response:

the session is terminated and the command prompt is changed to indicate idle mode

Negative Response:

an <rpc-error> message will be printed describing the error

Usage:

    yangcli andy@myserver> close-session

    RPC OK Reply 2 for session 10:

    yangcli>

Reference:

RFC 4741, section 7.8

commit

The commit command is used to save the edits in the <candidate> database into the <running> database. If there are no edits it will have no effect.

commit command

Command type:	remote
Default parameter:	none
Min parameters:	0
Max parameters:	2
Return type:	status
YANG file:	yuma-netconf.yang
Capabilities needed:	:candidate
Capabilities optional:	:confirmed-commit

Command Parameters:

confirmed
- type: empty
- usage: optional
- default: none
- capabilities needed: :confirmed-commit
- This parameter requests a confirmed commit procedure. The server will expect another commit command before the confirm-timeout time period expires.

confirm-timeout
- type: uint32 (range: 1 .. max)
- usage: optional
- default: 600 seconds

- capabilities needed: :confirmed-commit

- This is the number of seconds to request before the timeout.The 'confirmed' leaf must also be present for this parameter to have any affect.
persist
- type: string
- usage: optional
- persist ID used to start or extend the confirmed commit procedure
persist-id
- type: string
- usage: optional
- persist ID used to conform a previously started the confirmed commit procedure

Positive Response:

the session is terminated and the command prompt is changed to indicate idle mode

Negative Response:

an <rpc-error> message will be printed describing the error

Usage:

    yangcli andy@myserver> commit

    RPC OK Reply 5 for session 10:

    yangcli andy@myserver>

Reference:

RFC 4741, section 8.3.4

connect

The connect command is used to start a session with a NETCONF server.

If there already is a NETCONF session active, then an error message will be printed and the command will not be executed.

connect command

Command type:	remote
Default parameter:	server
Min parameters:	3
Max parameters:	8
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

server
- type: inet:ip-address (string containing IP address or DNS name
- usage: mandatory
- default: previous server used, if any, will be presented as the default, but not used automatically
- This parameter specifies the server address for the session.

password
- type: string (ncx:password)
- usage: mandatory
- default: previous password used, if any, will be presented as the default, but not used automatically
- This parameter specifies the password string to use to establish the session. It will not be echoed in parameter mode or saved in the command history buffer.
port
- type: uint16
- usage: optional
- default: 830
- This parameter specifies the TCP port number that should be used for the session.
timeout
- type: uint32 (0 = no timeout, otherwise the number of seconds to wait)
- usage: optional
- default: set to the $$timeout system variable, default 30 seconds
- This parameter specifies the number of seconds to wait for a response from the server before giving up. The session will not be dropped if a remote command times out, but any late response will be dropped. A value of zero means no timeout should be used, and yangcli will wait forever for a response.
user
- type: string
- usage: mandatory
- default: previous user name used, if any, will be presented as the default, but not used automatically
- This parameter specifies the user name to use for the session. This must be a valid user name on the NETCONF server.
protocols
- type: bits (netconf1.0 netconf1.1)
- usage: optional
- default: --protocols configuration parameter setting
- Specifies which NETCONF protocol versions to enable. Overrides –protocols configuration parameter.
private-key
- type: string
- usage: optional
- default: --private-key configuration parameter setting
- Specifies the SSH private key file to use. Overrides –private-key configuration parameter.
public-key
- type: string
- usage: optional
- default: --public-key configuration parameter setting
- Specifies the SSH public key file to use. Overrides –public-key configuration parameter.

Positive Response:

the session is started and the prompt changes to include the 'user@server' string.

Negative Response:

One or more error messages will be printed. Refer to the section on trouble-shooting NETCONF Session problems for more details.

Usage:

    yangcli> connect myserver user=andy password=yangrocks

    <startup screen printed>

    yangcli andy@myserver>

copy-config

The copy-config command is used to copy one entire NETCONF database to another location.

Not all possible parameter combinations will be supported by every server. In fact, the NETCONF protocol does not require any parameters to be supported unless the :startup or :url capabilities is supported by the server.

If the server supports the :startup capability, then it must support:

yangcli andy@myserver> copy-config source=running target=startup

This is the standard way to save a snapshot of the current running configuration in non-volatile storage, if the server has a separate startup database. If not, the server will automatically save any changes to the running configuration to non-volatile storage.

copy-config command

Command type:	remote
Default parameter:	none
Min parameters:	2
Max parameters:	3
Return type:	status
YANG file:	yuma-netconf.yang
Capabilities needed:	none
Capabilities optional:	:candidate:startup:url:with-defaults

Command Parameters:

source
- type: container with 1 of N choice of leafs
- usage: mandatory
- default: none
- This parameter specifies the name of the source database for the copy operation.
- container contents: 1 of N:
  - candidate
    - type: empty
    - capabilities needed: :candidate
  - running
    - type: empty
    - capabilities needed: none
  - startup
    - type: empty
    - capabilities needed: startup
  - config:
    - type: container (in-line configuration data)
    - capabilities needed: none
  - url
    - type: yang:uri
    - capabilities needed: :url, and the scheme used in the URL must be specified in the :url capability 'schemes' parameter
    - To enter this parameter, the interactive mode must be used. The shorthand mode (source=url) cannot be used, since this parameter contains a string.
target
- type: container with 1 of N choice of leafs
- usage: mandatory
- default: none
- This parameter specifies the name of the target database for the copy operation.
- container contents: 1 of N:
  - candidate
    - type: empty
    - capabilities needed: :candidate
  - running
    - type: empty
    - capabilities needed: :writable-running (still optional to implement)
      - netconfd does not support this mode
  - startup
    - type: empty
    - capabilities needed: startup
  - url
    - type: yang:uri
    - capabilities needed: :url, and the scheme used in the URL must be specified in the :url capability 'schemes' parameter.
    - To enter this parameter, the interactive mode must be used. The shorthand mode (target=url) cannot be used, since this parameter contains a string.
with-defaults
- type: enumeration (none report-all report-all-tagged trim explicit)
- usage: optional
- default: none
- capabilities needed: with-defaults
- This parameter controls how nodes containing only default values are copied to the target database.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> copy-config source=candidate
    
    Enter a number of the selected case statement:

      1: case candidate: 
           leaf candidate 
      2: case running: 
           leaf running 
      3: case startup: 
           leaf startup 
      4: case url: 
           leaf url

    Enter choice number [1 - 4]: 
    yangcli andy@myserver:copy-config> 4

    Filling optional case /copy-config/input/target/config-source/url
    Enter string value for leaf <url>:
    yangcli andy@myserver:copy-config> [smb://configs/myconfig.xml file://configs/myconfig.xml]

    RPC OK Reply 12 for session 10:
    yangcli andy@myserver>

Reference:

RFC 4741, section 7.3

create

The create command is a high-level <edit-config> operation. It is used to create some new nodes in the default target database.

A target node is specified (in 1 of 2 ways), and then the data structure is filled in. Only mandatory nodes will be filled in unless the $$optional system variable is set to 'true'.

Refer to the fill command for more details on interactive mode data structure completion.

create command

Command type:	remote
Default parameter:	target
Min parameters:	1
Max parameters:	5
Return type:	status
YANG file:	yangcli.yang
Capabilities needed:	:candidate or :writable-running

Command Parameters:

choice 'from' (not entered)
- type: choice of case 'varref' or case 'from-cli'
- usage: mandatory
- default: none
- This parameter specifies the where yangcli should get the data from, for the create operation. It is either a user variable or from interactive input at the command line.
  - varref
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the name of the user variable to use for the target of the create operation. The parameter must exist (e.g., created with the fill command) or an error message will be printed.
  - case from-cli (not entered)
    - target
      - type: string
      - usage: mandatory
      - default: none
      - This parameter specifies the database target node of the create operation. This is an ncx:schema-instance string, so any instance identifier, or absolute path expression, or something in between, is accepted.
    - urltarget
      - type: string
      - usage: optional
      - default: none
      - This parameter specifies the database target node of the create operation. This is an UrlPath string.
    - optional
      - type: empty
      - usage: optional
      - default: controlled by $$optional system variable
      - This parameter controls whether optional nodes within the target will be filled in. It can be used to override the $$optional system variable, when it is set to 'false'.
    - value
      - type: anyxml
      - usage: mandatory
      - default: none
      - This parameter specifies the value that should be used for the contents of the target parameter. If it is entered, then the interactive mode prompting for missing parameters will be skipped, if this parameter is complete (or all mandatory nodes present if the $$optional system variable is 'false'). For example, if the target is a leaf, then specifying this parameter will always cause the interactive prompt mode to be skipped.
timeout
- type: uint32 (0 = no timeout, otherwise the number of seconds to wait)

- usage: optional
- default: set to the $$timeout system variable, default 30 seconds
- This parameter specifies the number of seconds to wait for a response from the server before giving up. The session will not be dropped if a remote command times out, but any late response will be dropped. A value of zero means no timeout should be used, and yangcli will wait forever for a response.

System Variables:

$$default-operation
- The <default-operation> parameter for the <edit-config> operation will be derived from this variable.

$$error-option
- The <error-option> parameter for the <edit-config> operation will be derived from this variable
$$test-option
- The <test-option> parameter for the <edit-config> operation will be derived from this variable

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> create varref=myvar

    RPC OK Reply 10 for session 10:

    yangcli andy@myserver> create /nacm/rules/data-rule \
    (user will be prompted to fill in the data-rule contents)

    RPC OK Reply 11 for session 10:

    yangcli andy@myserver> create \
        target=/nacm/rules/data-rule[name='test rule']/comment \
        value=”this test rule is temporary. Do not remove!”
    (no user prompting; <edit-config> request sent right away)

    RPC OK Reply 12 for session 10:
    yangcli andy@myserver>

Reference:

RFC 4741, section 7.2

create-subscription

The create-subscription command is used to start receiving notifications from the server.

The :notification capability must be supported by the server to use this command.

Unless the :interleave capability is also supported by the server, then only the close-session command can be used while notifications are being delivered.

create-subscription command

Command type:	remote
Default parameter:	none
Min parameters:	0
Max parameters:	4
Return type:	status
YANG file:	notifications.yang
Capabilities needed:	:notification
Capabilities optional:	:interleave

Command Parameters:

stream
- type: string
- usage: optional
- default: 'NETCONF'
- This parameter specifies the name of the notification stream for this subscription request. Only the 'NETCONF' stream is mandatory to implement. Any other stream contains vendor-specific content, and may not be fully supported, depending on the stream encoding.
filter
- type: anyxml (same as the <get> or <get-config> filter parameter)
- usage: optional
- default: none
- This parameter specifies a boolean filter that should be applied to the stream. This is the same format as the standard <filter> element in RFC 4741, except that instead of creating a subset of the database for an <rpc-reply> PDU, the filter is used as a boolean test to send or drop each notification delivered from the server.
  - If any nodes are left in the 'test response', the server will send the entire notification.
  - If the result is empty after the filter is applied to the “test response”, then the server will not send the notification at all.
  - It is possible that access control will either cause the a notification to be dropped entirely, or may be pruned and still delivered. The standard is not clear on this topic. The netconfd server will prune any unauthorized payload from an eventType, but if the <eventType> itself is unauthorized, the entire notification will be dropped.
startTime
- type: yang:date-and-time
- usage: optional
- default: none
- This parameter causes any matching replay notifications to be delivered by the server, if notification replay is supported by the server. A notification will match if its <eventTime> value is greater or equal to the value of this parameter.
- After all the replay notifications are delivered, the server will send a <replayComplete> eventType, indicating there are no more replay notifications that match the subscription request.
stopTime
- type: yang:date-and-time
- usage: optional (not allowed unless startTime is also present)
- default: none
- This parameter causes any matching replay notifications to be delivered by the server, if notification replay is supported by the server. A notification will match if its <eventTime> value is less than the value of this parameter.
  - This parameter must be greater than the startTime parameter, or an error will be returned by the server.
  - If this parameter is used, then the entire subscription will stop after this specified time, even if it is in the future. The <notificationComplete> eventType will be sent by the server when this event occurs.
  - If this parameter is not used (but startTime is used), then the server will continue to deliver 'live' notifications after the <replayComplete> eventType is sent by the server.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> create-subscription

    RPC OK Reply 13 for session 10:

    yangcli andy@myserver> create-subscription \
        startTime=2009-01-01T00:00:00Z

    RPC OK Reply 14 for session 10:

    yangcli andy@myserver>

Reference:

RFC 5277, section 2.1.1

delete

The delete command is a high-level <edit-config> operation. It is used to delete an existing subtree in the default target database.

A target node is specified, and then any missing key leafs (if any) within the data structure are filled in. If the target is a leaf-list, then the user will be prompted for the value of the leaf-list node to be deleted.

Refer to the fill command for more details on interactive mode data structure completion.

delete command

Command type:	remote
Default parameter:	target
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yangcli.yang
Capabilities needed:	:candidate or :writable-running

Command Parameters:

target
- type: string
- usage: optional (urltarget or target must be present)
- default: none
- This parameter specifies the database target node of the delete operation. This is an ncx:schema-instance string, so any instance identifier, or absolute path expression, or something in between, is accepted.
urltarget
- - - - type: string
      - usage: optional
      - default: none
      - This parameter specifies the database target node of the delete operation. This is an UrlPath string.

System Variables:

$$default-operation
- The <default-operation> parameter for the <edit-config> operation will be derived from this variable.

$$error-option
- The <error-option> parameter for the <edit-config> operation will be derived from this variable
$$optional
- Controls whether optional descendant nodes will be filled into the target parameter contents
$$test-option
- The <test-option> parameter for the <edit-config> operation will be derived from this variable

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> delete /nacm/rules/data-rule \
    (user will be prompted to fill in the data-rule 'name' key leaf)

    RPC OK Reply 15 for session 10:

    yangcli andy@myserver> delete \
        target=/nacm/rules/data-rule[name='test rule']/comment
    (no user prompting; <edit-config> request sent right away)

    RPC OK Reply 16 for session 10:
    yangcli

Reference:

RFC 4741, section 7.2

delete-config

The delete-config command is used to delete an entire NETCONF database.

Not all possible target parameter values will be supported by every server. In fact, the NETCONF protocol does not require that any database be supported by this operation.

If the server supports the :url capability, then it may support deletion of local file databases in this manner.:

delete-config command

Command type:	remote
Default parameter:	none
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yuma-netconf.yang
Capabilities needed:	none
Capabilities optional:	:candidate:startup:url

Command Parameters:

target
- type: container with 1 of N choice of leafs
- usage: mandatory
- default: none
- This parameter specifies the name of the target database for the delete operation.
- container contents: 1 of N:
  - startup
    - type: empty
    - capabilities needed: startup
    - a server may support this target
  - url
    - type: yang:uri
    - capabilities needed: :url, and the scheme used in the URL must be specified in the :url capability 'schemes' parameter.
    - To enter this parameter, the interactive mode must be used. The shorthand mode (target=url) cannot be used, since this parameter contains a string.
    - a server may support this parameter

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> delete-config target=startup

    RPC OK Reply 17 for session 10:

    yangcli andy@myserver>

Reference:

RFC 4741, section 7.4

discard-changes

The discard-changes command is used to delete any edits that exist in the <candidate> database, on the NETCONF server. The server will only accept this command if the :candidate capability is supported. If the <candidate> database is locked by another session, then this request will fail with an 'in-use' error.

discard-changes command

Command type:	remote
Default parameter:	none
Min parameters:	0
Max parameters:	0
Return type:	status
YANG file:	yuma-netconf.yang
Capabilities needed:	:candidate

Command Parameters: none

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> discard-changes

    RPC OK Reply 18 for session 10:

    yangcli andy@myserver>

Reference:

RFC 4741, section 8.3.4.2

edit-config

The edit-config command allows a subset of a NETCONF database on the server to be changed.

If the server supports the :url capability, then it may support editing of local file databases.

If the server supports the :candidate capability, then it will allow edits to the <candidate> database.

If the server supports the :writable-running capability, it will support edits to the <running> database.

It is not likely that a server will support the <candidate> and <running> database as targets at the same time, since changes to the <running> configuration would not be reflected in the <candidate> database, while it was being edited by a different session.

edit-config command

Command type:	remote
Default parameter:	none
Min parameters:	2
Max parameters:	5
Return type:	status
YANG file:	yuma-netconf.yang
Capabilities needed:	:candidate or :writable-running
Capabilities optional:	:url:rollback-on-error:validate

Command Parameters:

default-operation
- type: enumeration (merge replace none)
- usage: optional
- default: merge
- This parameter specifies which edit operation will be in effect at the start of the operation, before any nc:operation attribute is found.
  - The high-level edit operations provided by yangcli will set this parameter to 'none'. This is the safest value, since only subtrees that have an explicit nc:operation attribute in effect can possibly be altered by the command.
  - If the value is 'merge', then any missing nodes in the database will be automatically created as needed.
  - If the value is 'replace', then the target database will be pruned to match the edits, as needed. Only the data from the config parameter will remain if this value is used. (Use with extreme caution).
error-option
- type: enumeration (stop-on-error continue-on-error rollback-on-error
- usage: optional
- default: stop-on-error
- This parameter specifies what the server should do when an error is encountered.
  - The rollback-on-error value is only allowed if the :rollback-on-error capability is supported by the server.
  - The standard is not clear what continue-on-error really means. It is suggested that this value not be used. It is possible that the server will validate all input parameters before making any changes, no matter how this parameter is set.
choice edit-content (not entered)
- config
  - type: anyxml
  - usage: mandatory
  - default: none
  - This parameter specifies the subset of the database that should be changed. This is the most common way to edit a NETCONF server database, since it is mandatory to support by all agents.
- url
  - type: yang:uri
  - capabilities needed: :url, and the scheme used in the URL must be specified in the :url capability 'schemes' parameter.
  - To enter this parameter, the interactive mode must be used. The shorthand mode (target=url) cannot be used, since this parameter contains a string.
target
- type: container with 1 of N choice of leafs
- usage: mandatory
- default: none
- This parameter specifies the name of the target database for the edit operation.
- container contents: choice: 1 of N:
  - candidate
    - type: empty
    - capabilities needed: :candidate
  - running
    - type: empty
    - capabilities needed: :writable-running
test-option
- type: enumeration (test-then-set set test-only)
- usage: optional
- default: set
- This parameter specifies how the server should test the edit-content parameter before using it.
  - If the value is 'set' (normal case), the server will apply validation tests as needed for the individual data structures being edited
  - The value 'test-then-set' is only allowed if the :validate capability is supported by the server. The server will test if the entire database will be valid after the edits are made, before making any changes to the candidate configuration.
    - This mode is very resource intensive. Set this parameter to 'set' for better performance, and run the validation tests manually with the validate command.
  - The value 'test-only' is not supported by all agents. It will be in the next version of the NETCONF protocol, but is non-standard at this time.
    - Use this value to check if a specific edit should succeed or not, allowing errors to be corrected before altering the database for real.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> edit-config target=candidate \
        default-operation=merge \
        test-option=test \
        error-option=stop-on-error \
        config=@myconfig.xml

    RPC OK Reply 19 for session 10:

    yangcli andy@myserver>

Reference:

RFC 4741, section 7.2

elif

The elif command is used to define a conditional command block after an if command.

This command must be entered within the same script as the if command, when used within a script. It can be used zero or more times within an if command sequence.

The expr parameter is used to specify the XPath expression to test if the elif conditional block is true or false. A false block will be skipped and a true block will be executed. The command prompt will contain the string '[F]' while inside a false conditional block in interactive mode. This expression string should be entered with quotes to avoid misinterpreting any whitespace or special characters.

The docroot parameter (if present) specifies the XML document that the 'expr' parameter should be evaluated against. This is optional, since only XPath path expressions need to refer to a document.

Even if the 'expr' expression is true, the conditional block will only be executed if no conditional block in the if command sequence has already been executed.

if command

....

[elif command]

....

[elif-command]

...

[else command]

...

end command

elif command

Command type:	local
Default parameter:	expr
Min parameters:	1
Max parameters:	2
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

expr
- type: XPath expression string
- usage: mandatory
- default: none
- This parameter specifies the XPath expression to determine if the following commands are within a true or false conditional block.
docroot
- type: anyxml
- usage: optional (typically a variable reference is used)
- default: none
- This parameter specifies the XML document that should be used if the expr XPath expression references any path nodes.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
- elif without a previous if command will cause an error
- elif following an 'else' command will cause an error
- invalid XPath expression or invalid docroot reference will cause an error

Usage:

    yangcli andy@myserver> elif expr='$x > 4'

    yangcli andy@myserver>

else

The else command is used to define a final conditional command block after an if command.

This command must be entered within the same script as the if command, when used within a script. It can be used zero or one time within an if command sequence.

The conditional command block following the else command will only be executed if no conditional block has already been executed in the same if command sequence.

if command

....

[elif command]

....

[elif-command]

...

[else command]

...

end command

else command

Command type:	local
Default parameter:	none
Min parameters:	0
Max parameters:	0
Return type:	status
YANG file:	yangcli.yang

Command Parameters: none

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
- else without a previous if command will cause an error

Usage:

    yangcli andy@myserver> else

    yangcli andy@myserver>

end

The end command is used to terminate a conditional command block after an if command block, or after a 'while' command.

This command must be entered within the same script as the if or while command, when used within a script.

if command

....

[elif command]

....

[elif-command]

...

[else command]

...

end command

while command

....

end command

end command

Command type:	local
Default parameter:	none
Min parameters:	0
Max parameters:	0
Return type:	status
YANG file:	yangcli.yang

Command Parameters: none

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
- else without a previous if command will cause an error

Usage:

    yangcli andy@myserver> end

    yangcli andy@myserver>

eval

The eval command is used to evaluate an XPath expression..

The expr parameter is used to specify the XPath expression to evaluate. This expression string should be entered with quotes to avoid misinterpreting any whitespace or special characters.

The docroot parameter (if present) specifies the XML document that the 'expr' parameter should be evaluated against. This is optional, since only XPath path expressions need to refer to a document.

eval command

Command type:	local
Default parameter:	expr
Min parameters:	1
Max parameters:	2
Return type:	data
YANG file:	yangcli.yang

Command Parameters:

expr
- type: XPath expression string
- usage: mandatory
- default: none
- This parameter specifies the XPath expression to determine if the following commands are within a true or false conditional block.
docroot
- type: anyxml
- usage: optional (typically a variable reference is used)
- default: none
- This parameter specifies the XML document that should be used if the expr XPath expression references any path nodes.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
- elif without a previous if command will cause an error
- elif following an 'else' command will cause an error
- invalid XPath expression or invalid docroot reference will cause an error

Output:

data
- type: anyxml
- This element will contain the result from the XPath expression. A node-set result will produce a complex element return value, and all other XPath result types will produce a string return value.

Usage:

    yangcli andy@myserver> $x = eval '$x + 1'

    yangcli andy@myserver> $sysname = eval '//sysName' docroot=$backup

eventlog

The eventlog command is used to view or clear all or part of the notification event log. This log will be empty if no well-formed notifications have been received from any server.

The eventlog show command is used to display some event log entries.

The eventlog clear command is used to delete some event log entries.

If no parameters are entered, it is the same as entering 'eventlog show=-1'.

The event log is not automatically emptied when a session terminates, in case the session was dropped unexpectedly. New entries will be appended to the event log as new sessions and/or subscriptions are started.

eventlog command

Command type:	local
Default parameter:	show
Min parameters:	0
Max parameters:	3
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

choice eventlog-action (not entered):
- type: choice of case 'show-case' or leaf 'clear'
- usage: optional
- default: show=-1 is used as the default if nothing entered
- This parameter specifies the event log action that should be performed.
  - clear
    - type: int32 (-1 to clear all entries; 1 to max to delete N entries)
    - usage: optional
    - default: -1
    - This parameter specifies the maximum number of event log entries to be deleted, starting from the oldest entries in the event log. The value -1 means delete all the entries. Otherwise the value must be greater than zero, and up to that many entries will be deleted.
  - case show-case (not entered)
    - choice help-mode (not entered) (default choice is 'normal')
      - brief
        type: empty
        
        usage: optional
        
        default: none
        
        This parameter specifies that brief documentation mode should be used. The event log index, sequence ID, and <eventType> will be displayed in this mode.
      - normal
        type: empty
        
        usage: optional
        
        default: none
        
        This parameter specifies that normal documentation mode should be used. The event log index, <eventTime>, sequence ID, and <eventType> will be displayed in this mode.
      - full
        type: empty
        
        usage: optional
        
        default: none
        
        This parameter specifies that full documentation mode should be used. The event log index, <eventTime>, sequence ID, and <eventType> will be displayed in this mode. In addition, the entire contents of the notification PDU will be displayed, using the current $$display-mode setting.
    - show
      - type: int32 (-1 for all, 1 to max for N entries)
      - usage: optional
      - default: -1
      - This parameter specifies the number of event log entries that should be displayed. The value '-1' indicates all the entries should be displayed. Otherwise, the value must be greater than zero, indicating the number of entries to display.
    - start
      - type: uint32
      - usage: optional
      - default: 0
      - This parameter specifies the start position in the event log to start displaying entries. The first entry is number zero. Each time the event log is cleared, the numbering restarts.

System Variables:

$$display-mode
- The log entries printed when help-mode='full' are formatted according to the current value of this system variable.

Positive Response:

the event log entries are printed or cleared as requested

Negative Response:

An error message will be printed if errors are detected.

Usage:

    yangcli andy@myserver> eventlog show=5 start=3

     [3]     [2009-07-10T02:21:10Z] (4)    <sysSessionStart> 
     [4]     [2009-07-10T02:23:14Z] (5)    <sysSessionEnd> 
     [5]     [2009-07-10T02:23:23Z] (6)    <sysSessionStart> 
     [6]     [2009-07-10T02:24:52Z] (7)    <sysConfigChange> 
     [7]     [2009-07-10T02:24:57Z] (8)    <sysSessionEnd>

    yangcli andy@myserver>

fill

The fill command is used to create a user variable for reuse in other commands.

It is used in an assignment statement to create a variable from various sources.

If it is not used in an assignment statement, then the result will not be saved, so the command will have no effect in this case.

The value contents will mirror the subtree within the NETCONF database indicated by the target parameter. If not completely provided, then missing descendant nodes will be filled in interactively, by prompting for each missing node.

fill command

Command type:	local
Default parameter:	target
Min parameters:	2
Max parameters:	3
Return type:	data
YANG file:	yangcli.yang

Command Parameters:

optional
- type: empty
- usage: optional
- default: controlled by $$optional system variable
- This parameter controls whether optional nodes within the target will be filled in. It can be used to override the $$optional system variable, when it is set to 'false'.
target
- type: string
- usage: mandatory
- default: none
- This parameter specifies the database target node of the create operation. This is an ncx:schema-instance string, so any instance identifier, or absolute path expression, or something in between, is accepted.
value
- type: anyxml
- usage: mandatory
- default: none
- This parameter specifies the content to use for the filled variable.
  - If this parameter is not entered, then the user will be prompted interactively to fill in the target data structure.
  - If a string is entered, then the target value being filled must be a leaf or leaf-list.
  - If a variable reference is entered, then it will be used as the content, if the target value being filled is a leaf or a leaf-list.
  - If the target value is a complex object, then the referenced variable must also be a complex object of the same type.
  - An error will be reported if the global or local variable does not reference the same object type as the target parameter.

System Variables:

$$optional
- Controls whether optional descendant nodes will be filled into the target parameter contents

Positive Response:

OK

Negative Response:

An error message will be printed if errors are detected.

Output:

data
- type: anyxml
- The data structure will mirror the requested target object.
- The variable (if any) will retain the target object name and namespace so it can be used in other operations more easily. In the example below, the $my_interface local variable will have the module name 'interfaces' and name 'interface', when used in other commands such as create or merge.

Usage:

    yangcli> $my-interface = fill \
        target=/interfaces/interface optional
        (user will be prompted to fill in all fields
         of the <interface> element)
       OK

    yangcli>

get

The get command is used to retrieve data from the server.

get command

Command type:	remote
Default parameter:	none
Min parameters:	0
Max parameters:	2
Return type:	data
YANG file:	yuma-netconf.yang

Command Parameters:

filter
- type: anyxml
- usage: optional
- default: none
- This parameter specifies a boolean filter that should be applied to the stream. Any data in the <running> database (or non-config data) that does not match the filter will be left out of the <rpc-reply> response.
  - If no filter is used, the server will return the entire <running> database and all non-config data as well. This could be a lot of data, depending on the server.
  - If the result is empty after the filter is applied to the available data, then the server will send an empty <data> element in the <rpc-reply>
  - It is possible that access control will cause the <rpc-reply> to be pruned. The netconfd server will silently prune any unauthorized payload from the <rpc-reply>.
with-defaults
- type: enumeration (none report-all report-all-tagged trim explicit)
- usage: optional
- default: none
- capabilities needed: with-defaults
- This parameter controls how nodes containing only default values are returned in the <rpc-reply>.

Positive Response:

the server returns <data>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Output:

data
- type: anyxml
- This element will contain the requested data from the <running> database, or non-config data from the server instrumentation.

Usage:

    yangcli andy@myserver> get

    RPC Data Reply 20 for session 10:

    rpc-reply {
        data {
           …. data returned by the server
        }
    }

    yangcli andy@myserver> get filter=@myfilter.xml

    RPC Data Reply 21 for session 10:

    rpc-reply {
        data {
        }
    }

    (the previous response will occur if the filter did not
     match anything or the server access control filtered the
     entire response)

    yangcli andy@myserver>

Reference:

RFC 4741, section 7.7

get-config

The get-config command is used to retrieve configuration data from the server.

get-config command

Command type:	remote
Default parameter:	none
Min parameters:	1
Max parameters:	3
Return type:	data
YANG file:	yuma-netconf.yang

Command Parameters:

filter
- type: anyxml
- usage: optional
- default: none
- This parameter specifies a boolean filter that should be applied to the stream. Any data in the <running> database (or non-config data) that does not match the filter will be left out of the <rpc-reply> response.
  - If no filter is used, the server will return the entire <running> database and all non-config data as well. This could be a lot of data, depending on the server.
  - If the result is empty after the filter is applied to the available data, then the server will send an empty <data> element in the <rpc-reply>
  - It is possible that access control will cause the <rpc-reply> to be pruned. The netconfd server will silently prune any unauthorized payload from the <rpc-reply>.
source
- type: container with 1 of N choice of leafs
- usage: mandatory
- default: none
- This parameter specifies the name of the source database for the retrieval operation.
- container contents: 1 of N:
  - candidate
    - type: empty
    - capabilities needed: :candidate
  - running
    - type: empty
    - capabilities needed: none
  - startup
    - type: empty
    - capabilities needed: startup
  - url
    - type: yang:uri
    - capabilities needed: :url, and the scheme used in the URL must be specified in the :url capability 'schemes' parameter
    - To enter this parameter, the interactive mode must be used. The shorthand mode (source=url) cannot be used, since this parameter contains a string.
with-defaults
- type: enumeration (none report-all report-all-tagged trim explicit)
- usage: optional
- default: none
- capabilities needed: with-defaults
- This parameter controls how nodes containing only default values are returned in the <rpc-reply>.

Positive Response:

the server returns <data>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Output:

data
- type: anyxml
- This element will contain the requested data from the source database.

Usage:

    yangcli andy@myserver> $my-config = get-config target=running

    RPC Data Reply 22 for session 10:

    rpc-reply {
        data {
           …. entire database returned by the server
        }
    }

    yangcli andy@myserver> @saved-config.xml = get-config \
        filter=@myfilter.xml  \
        target=candidate

    rpc-reply {
        data {
        … data requested by the filter
        }
    }

    yangcli andy@myserver>

Reference:

RFC 4741, section 7.1

get-locks

The get-locks command is a high-level wrapper for the <lock> operation. It is used to lock all the databases (<running> plus <candidate> and/or <startup> if they exist). If all the locks cannot be obtained, then release all the locks that were obtained (all-or-nothing).

The entire time to wait for a lock in use is set with the lock-timeout parameter.

The retry-interval parameter is used when the <lock> operation fails with a 'lock-denied' error-tag, because some other session has the lock.

If the <candidate> cannot be locked for another reason, a <discard-changes> operation will be attempted to clear any leftover edits.

Normally, the errors received while attempting to acquire locks are not printed to the log, like normal commands. Instead, if $$log-level system parameter is set to 'debug2' or 'debug3', then these messages will be printed.

get-locks command

Command type:	remote
Default parameter:	none
Min parameters:	0
Max parameters:	3
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

lock-timeout
- type: uint32 (seconds)
- usage: optional
- default: 120 seconds (2 minutes)
- This parameter specifies how long to wait for a lock that is in use by another session.
retry-interval
- type: uint32 (seconds)
- usage: optional
- default: 2 seconds
- This parameter specifies how long to wait to retry for a lock.
cleanup
- type:boolean
- usage: optional
- default: true
- This parameter controls whether the 'release-locks' command will be called automatically if the entire set of required locks cannot be granted.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> get-locks lock-timeout=0
    
    Sending <lock> operations for get-locks...

    RPC OK Reply 6 for session 23:

    RPC OK Reply 7 for session 23:

    get-locks finished OK 
    yangcli andy@myserver>

get-my-session

The get-my-session command is used to retrieve the session customization parameters from the server. It is only supported by the netconfd server.

The session indent amount, session line size, and default behavior for the with-defaults parameter can be controlled at this time.

get-my-session command

Command type:	remote
Default parameter:	none
Min parameters:	0
Max parameters:	0
Return type:	data
YANG file:	mysession.yang
Capabilities needed:	none

Command Parameters:

none

Positive Response:

the server returns <indent>, <linesize>, and <with-defaults> elements

Negative Response:

An error message will be printed if errors are detected locally.

An <rpc-error> message will be printed if the server detected an error.

Output:

indent
- type: uint32 (range 0 to 9)

linesize
- type: uint32
- This parameter specifies the desired line length for the session.
with-defaults
- type: enumeration (none report-all trim explicit)
- This parameter specifies the desired default with-defaults filtering behavior for the session.

    yangcli andy@myserver> get-my-session
    RPC Data Reply 25 for session 10:
    rpc-reply {
        data {
          indent 3
          linesize 72
          with-defaults report-all
        }
    }

    yangcli andy@myserver>

get-schema

The get-schema command is used to retrieve data model definition files from the server. This is part of the NETCONF monitoring draft. The server must support the :schema-retrieval capability to use this command.

If the server reports a module or module version that yangcli cannot find in its local module library, then an error message will be printed. The get-schema command can then be used to retrieve the missing module from the server.

The ietf-netconf-monitoring.yang module includes a list of the schema supported by the server, which can be retrieved from a server that supports this module, such as netconfd.

    yangcli andy@myserver> sget /netconf-state/schemas

The preceding command will return a <schemas> container with several <schema> child nodes. One example entry is shown below:

    schemas {
        schema system 2009-06-04 YANG { 
        identifier system 
        version 2009-06-04 
        format YANG 
        namespace http://netconfcentral.org/ns/yuma-system 
        location NETCONF 
        }
    }

The <identifier>, <version> and <format> leafs can be used as the corresponding parameter values for the get-schema command. See the example below for more details.

get-schema command

Command type:	remote
Default parameter:	none
Min parameters:	3
Max parameters:	3
Return type:	data
YANG file:	ietf-netconf-monitoring.yang
Capabilities needed:	:schema-retrieval

Command Parameters:

identifier
- type: string
- usage: mandatory
- default: none
- This parameter specifies the name of the module to retrieve.
  - Do not use any path specification of file extension; just the module name is entered.
  - The name is case-sensitive, and must be specified exactly as defined.
version
- type: string
- usage: mandatory
- default: none
- This parameter specifies the version of the module to retrieve.
  - For YANG modules, this will be the most recent revision date string defined in a module revision statement.
  - If any version is acceptable, or if the specific version is not known, then use the empty string.
format
- type: enumeration (XSD YANG YIN RNG)
- usage: mandatory
- default: none
- This parameter specifies the format of the module to be retrieved.
  - XSD: W3C REC REC-xmlschema-1-20041028
  - YANG: RFC 6020
  - YIN: RFC 6020
  - RNG: ISO/IEC 19757-2
  - netconfd only supports the YANG and YIN formats

Positive Response:

the server returns <data>

Negative Response:

An error message will be printed if errors are detected locally.

An <rpc-error> message will be printed if the server detected an error.

Output:

data
- type: anyxml
- yangcli will strip off this XML container if the command result is being saved to a text file. Only the YANG contents will be saved instead.

Usage:

    yangcli andy@myserver> @notifications.yang = get-schema \
        identifier=notifications \
        version=2009-06-04 \
        format=YANG

    RPC Data Reply 24 for session 10:

    rpc-reply {
        data {
           …. entire notifications.yang contents
        }
    }

    (after retrieval, the module can be loaded locally
     with the mgrload command)

    yangcli andy@myserver> mgrload notificications.yang

OK

    yangcli andy@myserver>

Reference:

draft-ietf-netconf-monitoring-06.txt

help

The help command is used to print documentation to STDOUT.

If no session is active, then only help for the local commands and the standard NETCONF commands will be available.

If a NETCONF session is active, then the documentation shown will attempt to exactly match the capabilities of the server.

If additional (i.e., augment generated) parameters are available, then they will be shown in the command output. If the server does not implement some parameters (e.g., feature not supported) then these parameters will not be shown in the command output.

If the server has modified an object with deviation statements, then the altered object will be shown.

The ncx:hidden extension suppresses the help command. If this extension is present in the YANG definition associated with the request, then no help will be available for that object or command.

help command

Command type:	local
Default parameter:	command
Min parameters:	3
Max parameters:	3
Return type:	data
YANG file:	ietf-netconf-monitoring.yang
Capabilities needed:	:schema-retrieval

Command Parameters:

choice helptype (not entered)
- command
  - type: string
  - usage: mandatory
  - default: none
  - This parameter specifies the name of the command for which documentation is requested
- commands
  - type: empty
  - usage: mandatory
  - default: none
  - This parameter will request documentation for all available commands
- notification
  - type: string
  - usage: mandatory
  - default: none
  - This parameter specifies the name of the notification for which documentation is requested
- object
  - type: string
  - usage: mandatory
  - default: none
  - This parameter specifies the name of the NETCONF database object for which documentation is requested.
    - Only top level objects are supported by this command.
    - Documentation for the entire object subtree will be printed, if the object is a container, choice, or list.
    - Documentation for nested objects is only available in parameter mode, using the escape commands for help ('?') and full help ('??')
- type
  - type: string
  - usage: mandatory
  - default: none
  - This parameter specifies the name of the YANG typedef for which documentation is requested
  - Only top-level typedefs are supported by this command. Local typedefs within groupings, containers, or lists are not exportable in YANG.
choice help-mode (not entered) (default choice is 'normal')
- brief
  - type: empty
  - usage: optional
  - default: none
  - This parameter specifies that brief documentation mode should be used.
- normal
  - type: empty
  - usage: optional
  - default: none
  - This parameter specifies that normal documentation mode should be used.
- full
  - type: empty
  - usage: optional
  - default: none
  - This parameter specifies that full documentation mode should be used.

Positive Response:

the server prints the requested help text

Negative Response:

An error message will be printed if errors are detected.

Usage:

yangcli> help help full

help 
   Print the yangcli help text 
   input 
      default parameter: command 
      choice helptype 
         leaf command [NcxIdentifier] 
            Show help for the specified command, 
            also called an RPC method

         leaf commands [empty] 
            Show info for all local commands

         leaf notification [NcxIdentifier] 
            Show help for the specified notification

         leaf object [NcxIdentifier] 
            Show help for the specified object

         leaf type [NcxIdentifier] 
            Show help for the specified type

      choice help-mode 
         leaf brief [empty] 
            Show brief help text

         leaf normal [empty] 
            Show normal help text

         leaf full [empty] 
            Show full help text

yangcli andy@myserver> help notification sysConfigChange

notification sysConfigChange 
   Generated when the <running> configuration is changed. 
   leaf userName [string]

   leaf sessionId [SessionId] 
      range: 1..max

   leaf remoteHost [ip-address]

   leaf target [string]

   leaf operation [EditOperationType] [d:merge] 
      enum values: merge replace create delete

yangcli andy@svnserver>

history

The history command is used to show, clear, load, or save the command line history buffer.

Use the recall command to recall a previously executed command line, after getting the line number from the history show command.

All lines entered will be saved in the history buffer except an ncx:password value entered in parameter mode.

When yangcli starts, the command line history buffer is empty. If a history file was previously stored with the history save command, then it can be recalled into the buffer with the history load command.

The history clear command is used to delete the entire command line history buffer.

The numbering sequence for commands, starts from zero and keeps incremented until the program exits. If the history buffer is cleared, then the number sequence will continue, not start over at zero.

history command

Command type:	local
Default parameter:	show
Min parameters:	0
Max parameters:	2
Return type:	data
YANG file:	yangcli.yang

Command Parameters:

choice history-action (not entered)
- clear
  - type: empty
  - usage: optional
  - default: none
  - This parameter specifies that the history buffer should be cleared. Unless the contents have been saved with the history save command, there is no way to recover the cleared buffer contents after this command is executed.
- load
  - type: string
  - usage: optional
  - default: $HOME/.yangcli_history
  - This parameter specifies a command history file, and causes the current command line history contents to be loaded from that file.
  - Special processing for this command allows the history file to be omitted in idle mode, even though the load parameter is not type 'empty'.

        yangcli> history load
          same as:
        yangcli> history load=$HOME/.yangcli_history

- save
  - type: string
  - usage: optional
  - default: $HOME/.yangcli_history
  - This parameter specifies a command history file, and causes the current command line history contents to be saved to that file.
  - Special processing for this command allows the history file to be omitted in idle mode, even though the save parameter is not type 'empty'.

        yangcli> history save
           same as:
         yangcli> history save=$HOME/.yangcli_history

- show
  - type: int32 (-1 for all entries; 1..max for N entries)
  - usage: optional
  - default: -1
  - This parameter specifies the maximum number of history entries to show.
    - If no case is selected from this choice, then the command 'history show=-1' will be used by default.
    - The help-mode choice parameter is only used with the history show command.
      - If the --brief or --normal modes are selected the the format will include the command number and the command line.
      - If the --full mode is selected, then the command data and time will also be printed.
choice help-mode (not entered)This parameter is ignored unless the history show command is entered.
- brief
  - type: empty
  - usage: optional
  - default: none
  - This parameter specifies that brief documentation mode should be used.
- normal
  - type: empty
  - usage: optional
  - default: none
  - This parameter specifies that normal documentation mode should be used.
- full
  - type: empty
  - usage: optional
  - default: none
  - This parameter specifies that full documentation mode should be used.

Positive Response:

the requested history entries will be printed for the history show command
all other commands will return OK

Negative Response:

An error message will be printed if errors are detected.

Usage:

    yangcli> history show=3 full
      [27]    2009-07-04 09:25:34 sget /system --nofill
      [28]    2009-07-04 09:34:17 @myconfig = get-config source=running 
      [29]    2009-07-04 09:43:54 history show=3 full

    yangcli> history save=~/my-temp-history-file
       OK
    yangcli>

if

The if command is used to start a conditional command block.

The expr parameter is used to specify the XPath expression to test if the if conditional block is true or false. A false block will be skipped and a true block will be executed. The command prompt will contain the string '[F]' while inside a false conditional block in interactive mode. This expression string should be entered with quotes to avoid misinterpreting any whitespace or special characters.

The docroot parameter (if present) specifies the XML document that the 'expr' parameter should be evaluated against. This is optional, since only XPath path expressions need to refer to a document.

If the 'expr' expression is true, the conditional block will be executed, and no further conditional blocks within the same if command sequence will be executed.

if command

....

[elif command]

....

[elif-command]

...

[else command]

...

end command

if command

Command type:	local
Default parameter:	expr
Min parameters:	1
Max parameters:	2
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

expr
- type: XPath expression string
- usage: mandatory
- default: none
- This parameter specifies the XPath expression to determine if the following commands are within a true or false conditional block.
docroot
- type: anyxml
- usage: optional (typically a variable reference is used)
- default: none
- This parameter specifies the XML document that should be used if the expr XPath expression references any path nodes.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
- invalid XPath expression or invalid docroot reference will cause an error

Usage:

    yangcli andy@myserver> if "$sysname = 'localhost'"

    yangcli andy@myserver>

insert

The insert command is used to insert or move YANG list or leaf-list data into a NETCONF database. It is a high level command with utilizes the YANG 'insert' extensions to the NETCONF <edit-config> operation.

insert command

Command type:	remote
Default parameter:	target
Min parameters:	2
Max parameters:	7
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

choice 'from' (not entered)
- type: choice of case 'varref' or case 'from-cli'
- usage: mandatory
- default: none
- This parameter specifies the where yangcli should get the data from, for the insert operation. It is either a user variable or from interactive input at the command line.
  - varref
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the name of the user variable to use for the target of the insert operation. The parameter must exist (e.g., created with the fill command) or an error message will be printed.
  - case from-cli (not entered)
    - target
      - type: string
      - usage: mandatory
      - default: none
      - This parameter specifies the database target node of the insert operation. This is an ncx:schema-instance string, so any instance identifier, or absolute path expression, or something in between, is accepted.
    - optional
      - type: empty
      - usage: optional
      - default: controlled by $$optional system variable
      - This parameter controls whether optional nodes within the target will be filled in. It can be used to override the $$optional system variable, when it is set to 'false'.
    - value
      - type: anyxml
      - usage: mandatory
      - default: none
      - This parameter specifies the value that should be used for the contents of the target parameter. If it is entered, then the interactive mode prompting for missing parameters will be skipped, if this parameter is complete (or all mandatory nodes present if the $$optional system variable is 'false'). For example, if the target is a leaf, then specifying this parameter will always cause the interactive prompt mode to be skipped.

edit-target
- type: string
- usage: optional (must be present if the order parameter is set to 'before' or 'after').
- default: none
- This parameter specifies the value or key clause that should be used, as the list or leaf-list insertion point. It identifies the existing entry that the new entry will be inserted before or after, depending on the order parameter.
  - For a leaf-list, the edit-target contains the value of the target leaf-list node within the configuration being edited. E.g., edit-target='fred'.
  - For a list, the edit-target contains the key values of the target list node within the configuration being edited. E.g., edit-target=[name='fred'][zipcode=90210].
order
- type: enumeration (first last before after)
- usage: optional
- default: last
- The insert order that should be used. If the value 'before' or 'after' is selected, then the edit-target parameter must also be present.
operation
- type: enumeration (create merge replace)
- usage: optional
- default: merge
- This parameter specifies the nc:operation attribute value for the NETCONF <edit-config> operation. The insert operation is secondary to the NETCONF operation attribute.

timeout
- type: uint32 (0 = no timeout, otherwise the number of seconds to wait)

- usage: optional
- default: set to the $$timeout system variable, default 30 seconds
- This parameter specifies the number of seconds to wait for a response from the server before giving up. The session will not be dropped if a remote command times out, but any late response will be dropped. A value of zero means no timeout should be used, and yangcli will wait forever for a response.

System Variables:

$$default-operation
- The <default-operation> parameter for the <edit-config> operation will be derived from this variable.

$$error-option
- The <error-option> parameter for the <edit-config> operation will be derived from this variable
$$test-option
- The <test-option> parameter for the <edit-config> operation will be derived from this variable

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> insert varref=myvar order=first

    RPC OK Reply 25 for session 10:

    yangcli andy@myserver> insert /nacm/rules/data-rule \
            order=after \
            edit-target=”[name='test-rule']”

    (user will be prompted to fill in the data-rule contents)

    RPC OK Reply 26 for session 10:

    yangcli andy@myserver>

Reference:

draft-ietf-netmod-yang-13

kill-session

The kill-session command is used to terminate a NETCONF session (other than the current session). All NETCONF implementations must support this command. It is needed sometimes to unlock a NETCONF database locked by a session that is idle or stuck.

If the lock command returns a 'lock-denied' <error-tag>, it will also include an <error-info> field called <session-id>. This is the session number that currently holds the requested lock. The same value should be used for the session-id parameter in this command, to terminate the session will the lock.

Note: this is an extreme measure, which should be used with caution.

kill-session command

Command type:	remote
Default parameter:	target
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yuma-netconf.yang

Command Parameters:

session-id
- type: uint32 (range: 1.. max)
- usage: mandatory
- default: none
- This parameter specifies the session number of the currently active NETCONF session that should be terminated.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> kill-session session-id=11

    RPC OK Reply 27 for session 10:

    yangcli andy@myserver>

Reference:

RFC 4741, section 7.9

list

This list command is used to display the commands, objects, and oids (object identifiers) that are available at the time.

The list commands command will display the local commands and the remote commands that are available in the current NETCONF session, or which have been loaded with the mgrload command.

The list files command will display the data files that are in the current data search path. The module parameter has no affect in this mode.

The list modules command will display the YANG files that are in the current YANG module search path. The module parameter has no affect in this mode.

The list objects command will display the top-level objects that are currently available in the current NETCONF session, or which have been loaded with the mgrload command.

The list oids command will display the object identifiers of the top-level objects that are currently available in the current NETCONF session, or which have been loaded with the mgrload command.

The list scripts command will display the script files that are in the current script search path. The module parameter has no affect in this mode.

list command

Command type:	local
Default parameter:	none
Min parameters:	1
Max parameters:	6
Return type:	data
YANG file:	yangcli.yang

Command Parameters:

choice help-mode (not entered)This parameter is ignored if the listtype choice is set to ' the history show command is entered.
- brief
  - type: empty
  - usage: optional
  - default: none
  - This parameter specifies that brief documentation mode should be used.
- normal
  - type: empty
  - usage: optional
  - default: none
  - This parameter specifies that normal documentation mode should be used.
- full
  - type: empty
  - usage: optional
  - default: none
  - This parameter specifies that full documentation mode should be used.

choice 'listtype' (not entered)
- usage: mandatory
- default: none
- This parameter specifies the what type of data should be listed.
- commands
  - type: empty
  - usage: mandatory
  - default: none
  - This parameter specifies that the available commands should be listed.
    - If the help-mode is set to 'brief', then only the command names will be listed.
    - If the help-mode is set to 'normal', then the XML prefix and the command name will be listed.
    - If the help-mode is set to 'full', then the module name and the command name will be listed.
- files
  - type: empty
  - usage: mandatory
  - default: none
  - This parameter specifies that all the data files in the current data search path should be listed.
- modules
  - type: empty
  - usage: mandatory
  - default: none
  - This parameter specifies that all the YANG files in the current module search path should be listed.
- objects
  - type: empty
  - usage: mandatory
  - default: none
  - This parameter specifies that the available top-level objects should be listed.
    - If the help-mode is set to 'brief', then only the object names will be listed.
    - If the help-mode is set to 'normal', then the XML prefix and the object name will be listed.
    - If the help-mode is set to 'full', then the module name and the object name will be listed.
- oids
  - type: empty
  - usage: mandatory
  - default: none
  - This parameter specifies that the available top-level object identifiers should be listed.
    - The help-mode parameter has no effect
- scripts
  - type: empty
  - usage: mandatory
  - default: none
  - This parameter specifies that all the script files in the current script search path should be listed.
module
- type: string
- usage: optional
- default: none
- This parameter specifies a module name. If present then only information for the specified YANG module will be displayed.

Positive Response:

the requested information will be printed

Negative Response:

An error message will be printed if errors are detected.

Usage:

yangcli andy@myserver> list objects full module=test

   test:instance1 
   test:instance2 
   test:leafref1 
   test:leafref2 
   test:test1 
   test:test2 
   test:test3 
   test:idtest 
   test:musttest 
   test:anyxml.1 
   test:binary.1 
   test:bits.1 
   test:boolean.1 
   test:empty.1 
   test:enumeration.1 
   test:identityref.1 
   test:instance-identifier.1 
   test:instance-identifier.2 
   test:int8.1 
   test:int16.1 
   test:int32.1 
   test:int64.1 
   test:leafref.1 
   test:leafref.2 
   test:string.1 
   test:uint8.1 
   test:uint16.1 
   test:uint32.1 
   test:uint64.1 
   test:dec64.1 
   test:dec64.2 
   test:dec64.3 
   test:union.1 
   test:container.1 
   test:container.2 
   test:list.1 
   test:choice.1 
   test:xpath.1

yangcli andy@myserver>

load

The load command is used to load a YANG module into the server.

This command is only supported by the netconfd server.

The YANG files must be available in the module search path for the server.

Refer to the netconfd configuration section for more details on adding new YANG modules into the server.

After using this command, the mgrload command may also be needed to keep the current session synchronized with the server.

Use the revision parameter to load a specific revision of a module.

The server will return the revision date of the module that was loaded (or already present).

load command

Command type:	remote
Default parameter:	module
Min parameters:	1
Max parameters:	3
Return type:	data
YANG file:	yuma-system.yang

Command Parameters:

module
- type: string (length 1 .. 63)
- usage: mandatory
- default: none
- This parameter specifies the name of the module to load.
revision
- type: date string (YYYY-MM-DD)
- usage: optional
- default: none
- This parameter specifies the revision date of the module to load.
deviation:
- type: leaf-list of deviation module names
- usage: optional (0 or more instances)
- default: none
- This parameter specifies a deviation module to load prior to loading the requested module.

Positive Response:

the server returns <mod-revision>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> load toaster revision=2009-06-23

    RPC Data Reply 27 for session 10:

    rpc-reply { 
       mod-revision 2009-06-23 
    }

    yangcli andy@myserver>

lock

The lock command is used to request a global lock on a NETCONF database. It is used, along with the unlock command, to obtain exclusive write access to the NETCONF server.

The scope of a lock command is the lifetime of the session that requested the lock. This means that if the session that owns the lock is dropped for any reason, all the locks it holds will be released immediately by the server.

The use of database locks is optional in NETCONF, but it must be implemented by every server. It is strongly suggested that locks be used if multiple managers are likely to log into the particular NETCONF server.

One or more locks may be needed to execute a transaction safely:

If the :writable-running capability is supported, then a lock on the <running> database is needed. This database can be locked at any time.
If the :startup capability is supported, then a lock on the <startup> database is needed. This database can be locked at any time.
If the :candidate capability is supported, then a lock on the <candidate> database is needed. A lock on the <running> database is also needed.
- The <candidate> database can only be locked if there are no active edits in it.
- The discard-changes command may be needed to clear a <candidate> database that has been left edited by a session that terminated unexpectedly.
- Note: There is no way in NETCONF to tell the difference between an actively edited <candidate> database and an 'abandoned' <candidate> database. The server will almost never clear the <candidate> database. It will only clear any locks held. Use the discard-changes command (for other session's edits) with extreme caution.

lock command

Command type:	remote
Default parameter:	none
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yuma-netconf.yang
Capabilities needed:	none
Capabilities optional:	:candidate:startup:url

Command Parameters:

target
- type: container with 1 of N choice of leafs
- usage: mandatory
- default: none
- This parameter specifies the name of the target database to be locked.
- container contents: 1 of N:
  - candidate
    - type: empty
    - capabilities needed: :candidate
  - running
    - type: empty
    - capabilities needed: none
  - startup
    - type: empty
    - capabilities needed: startup
  - url
    - type: yang:uri
    - capabilities needed: :url, and the scheme used in the URL must be specified in the :url capability 'schemes' parameter.
    - To enter this parameter, the interactive mode must be used. The shorthand mode (target=url) cannot be used, since this parameter contains a string.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.
- If the <error-tag> is 'lock-denied' then the <error-info> will contain a <session-id> leaf. This identifies the session number of the current lock holder.

Usage:

    yangcli andy@myserver> lock target=candidate

    RPC OK Reply 29 for session 10:

    yangcli andy@myserver>

log-debug

The log-debug command prints a message to the program log, if the $$log-level system variable is set to 'debug' or a higher enumeration (e.g., 'debug2').

The msg parameter is used to provide the message string to print.

log-debug command

Command type:	local
Default parameter:	msg
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

msg
- type: string
- usage: mandatory
- default: none
- This parameter specifies the string to print to the program log.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if the msg parameter contains errors.

Usage:

    yangcli andy@myserver>log-debug 'starting strict foo'

    Debug: starting script foo

    yangcli andy@myserver>

log-error

The log-error command prints a message to the program log, if the $$log-level system variable is set to 'error' or a higher enumeration (e.g., 'info').

The msg parameter is used to provide the message string to print.

log-error command

Command type:	local
Default parameter:	msg
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

msg
- type: string
- usage: mandatory
- default: none
- This parameter specifies the string to print to the program log.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if the msg parameter contains errors.

Usage:

    yangcli andy@myserver>log-error 'sysName not correct'

    Error: sysName not correct

    yangcli andy@myserver>

log-info

The log-info command prints a message to the program log, if the $$log-level system variable is set to 'info' or a higher enumeration (e.g., 'debug').

The msg parameter is used to provide the message string to print.

log-info command

Command type:	local
Default parameter:	msg
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

msg
- type: string
- usage: mandatory
- default: none
- This parameter specifies the string to print to the program log.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if the msg parameter contains errors.

Usage:

    yangcli andy@myserver>log-info 'sysName is correct'

    Info: sysName is correct

    yangcli andy@myserver>

log-warn

The log-warn command prints a message to the program log, if the $$log-level system variable is set to 'warn' or a higher enumeration (e.g., 'debug').

The msg parameter is used to provide the message string to print.

log-warn command

Command type:	local
Default parameter:	msg
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

msg
- type: string
- usage: mandatory
- default: none
- This parameter specifies the string to print to the program log.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if the msg parameter contains errors.

Usage:

    yangcli andy@myserver>log-warn 'sysName object not found'

    Warning: sysName object not found

    yangcli andy@myserver>

merge

The merge command is a high-level <edit-config> operation. It is used to merge some new nodes into the default target database.

A target node is specified (in 1 of 2 ways), and then the data structure is filled in. Only mandatory nodes will be filled in unless the $$optional system variable is set to 'true'.

Refer to the fill command for more details on interactive mode data structure completion.

merge command

Command type:	remote
Default parameter:	target
Min parameters:	1
Max parameters:	5
Return type:	status
YANG file:	yangcli.yang
Capabilities needed:	:candidate or :writable-running

Command Parameters:

choice 'from' (not entered)
- type: choice of case 'varref' or case 'from-cli'
- usage: mandatory
- default: none
- This parameter specifies the where yangcli should get the data from, for the merge operation. It is either a user variable or from interactive input at the command line.
  - varref
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the name of the user variable to use for the target of the merge operation. The parameter must exist (e.g., created with the fill command) or an error message will be printed.
  - case from-cli (not entered)
    - target
      - type: string
      - usage: optional (target or urltarget must be entered)
      - default: none
      - This parameter specifies the database target node of the merge operation. This is an ncx:schema-instance string, so any instance identifier, or absolute path expression, or something in between, is accepted.
    - urltarget
      - type: string
      - usage: optional
      - default: none
      - This parameter specifies the database target node of the merge operation. This is an UrlPath string.
    - optional
      - type: empty
      - usage: optional
      - default: controlled by $$optional system variable
      - This parameter controls whether optional nodes within the target will be filled in. It can be used to override the $$optional system variable, when it is set to 'false'.
    - value
      - type: anyxml
      - usage: mandatory
      - default: none
      - This parameter specifies the value that should be used for the contents of the target parameter. If it is entered, then the interactive mode prompting for missing parameters will be skipped, if this parameter is complete (or all mandatory nodes present if the $$optional system variable is 'false'). For example, if the target is a leaf, then specifying this parameter will always cause the interactive prompt mode to be skipped.
timeout
- type: uint32 (0 = no timeout, otherwise the number of seconds to wait)

- usage: optional
- default: set to the $$timeout system variable, default 30 seconds
- This parameter specifies the number of seconds to wait for a response from the server before giving up. The session will not be dropped if a remote command times out, but any late response will be dropped. A value of zero means no timeout should be used, and yangcli will wait forever for a response.

System Variables:

$$default-operation
- The <default-operation> parameter for the <edit-config> operation will be derived from this variable.

$$error-option
- The <error-option> parameter for the <edit-config> operation will be derived from this variable
$$test-option
- The <test-option> parameter for the <edit-config> operation will be derived from this variable

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> merge \
        target=/nacm/rules/moduleRule[moduleName='netconf']\
        [allowed-rights='read write']/allowed-group \
        value=ncx:guest

    (no user prompting; <edit-config> request sent right away)

    RPC OK Reply 31 for session 10:

    yangcli andy@myserver>

Reference:

RFC 4741, section 7.2

mgrload

The mgrload command is used to load a YANG module into yangcli.

The YANG files must be available in the module search path for yangcli.

mgrload command

Command type:	local
Default parameter:	module
Min parameters:	1
Max parameters:	3
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

module
- type: string (length 1 .. 63)
- usage: mandatory
- default: none
- This parameter specifies the name of the module to load.
revision
- type: date string (YYYY-MM-DD)
- usage: optional
- default: none
- This parameter specifies the revision date of the module to load.
deviation:
- type: leaf-list of deviation module names
- usage: optional (0 or more instances)
- default: none
- This parameter specifies a deviation module to load prior to loading the requested module.

Positive Response:

OK

Negative Response:

An error message will be printed if errors are detected.

Usage:

    yangcli> mgrload toaster

    Load module toaster OK

    yangcli>

no-op

The no-op command is used to test server message processing response times, by providing a baseline response time to do nothing except return <ok/>.

It can also be used as an application-level keep-alive to prevent proxy idle timeout or server idle timeout problems from occurring.

This command is only supported by the netconfd server. The server will simply respond 'OK', if the request is well-formed.

no-op command

Command type:	remote
Default parameter:	none
Min parameters:	0
Max parameters:	0
Return type:	status
YANG file:	yuma-system.yang

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> no-op

    RPC OK Reply 31 for session 10:

    yangcli andy@myserver>

pwd

The pwd command is used to print the current working directory.

pwd command

Command type:	local
Default parameter:	none
Min parameters:	0
Max parameters:	0
Return type:	status
YANG file:	yangcli.yang

Positive Response:

the current working directory is printed to the log or STDOUT

Negative Response:

An error message will be printed if errors are detected.

Usage:

    yangcli> pwd

    Current working directory is /home/andy

    yangcli>

quit

The quit command is used to terminate the yangcli program.

If a NETCONF session is in progress, it will be dropped without sending a close-session command first. This should be taken into account if the server reports dropped TCP connections as an error.

quit command

Command type:	local
Default parameter:	none
Min parameters:	0
Max parameters:	0
Return type:	none
YANG file:	yangcli.yang

Positive Response:

The program terminates; no response will be printed.

Negative Response:

An error message will be printed if errors are detected.

Usage:

    yangcli> quit

    andy@myworkstation>

recall

The recall command is used to recall a previously entered command line from the command line history buffer.

A command is recalled by its command ID number. Use the history show command to see the contents of the command line history buffer.

recall command

Command type:	local
Default parameter:	index
Min parameters:	1
Max parameters:	1
Return type:	data
YANG file:	yangcli.yang

Positive Response:

The specified command line is recalled into the current command line.

Negative Response:

An error message will be printed if errors are detected.

Usage:

    yangcli> recall 7

    yangcli>sget /system

release-locks

The release-locks command is used to release all the locks that were previously granted with the get-locks command.

If the get-locks command was not used, then this command will fail with an error message that no locks are active to unlock.

release-locks command

Command type:	remote
Default parameter:	none
Min parameters:	0
Max parameters:	0
Return type:	status
YANG file:	yangcli.yang

Positive Response:

The previously granted locks are released.

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage: (showing 2 locks being released)

    yangcli ady@myserver> release-locks

    RPC OK Reply 8 for session 23: 
    RPC OK Reply 9 for session 23:

    yangcli andy@myserver>

replace

The replace command is a high-level <edit-config> operation. It is used to replace an existing subtree with some new nodes, in the default target database.

Only the subtree indicated by the target or varref parameter will be replaced.

A target node is specified (in 1 of 2 ways), and then the data structure is filled in. Only mandatory nodes will be filled in unless the $$optional system variable is set to 'true'.

Refer to the fill command for more details on interactive mode data structure completion.

replace command

Command type:	remote
Default parameter:	target
Min parameters:	1
Max parameters:	5
Return type:	status
YANG file:	yangcli.yang
Capabilities needed:	:candidate or :writable-running

Command Parameters:

choice 'from' (not entered)
- type: choice of case 'varref' or case 'from-cli'
- usage: mandatory
- default: none
- This parameter specifies the where yangcli should get the data from, for the replace operation. It is either a user variable or from interactive input at the command line.
  - varref
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the name of the user variable to use for the target of the replace operation. The parameter must exist (e.g., created with the fill command) or an error message will be printed.
  - case from-cli (not entered)
    - target
      - type: string
      - usage: optional (target or urltarget must be present)
      - default: none
      - This parameter specifies the database target node of the replace operation. This is an ncx:schema-instance string, so any instance identifier, or absolute path expression, or something in between, is accepted.
    - urltarget
      - type: string
      - usage: optional
      - default: none
      - This parameter specifies the database target node of the replace operation. This is an UrlPath string.
    - optional
      - type: empty
      - usage: optional
      - default: controlled by $$optional system variable
      - This parameter controls whether optional nodes within the target will be filled in. It can be used to override the $$optional system variable, when it is set to 'false'.
    - value
      - type: anyxml
      - usage: mandatory
      - default: none
      - This parameter specifies the value that should be used for the contents of the target parameter. If it is entered, then the interactive mode prompting for missing parameters will be skipped, if this parameter is complete (or all mandatory nodes present if the $$optional system variable is 'false'). For example, if the target is a leaf, then specifying this parameter will always cause the interactive prompt mode to be skipped.
timeout
- type: uint32 (0 = no timeout, otherwise the number of seconds to wait)

- usage: optional
- default: set to the $$timeout system variable, default 30 seconds
- This parameter specifies the number of seconds to wait for a response from the server before giving up. The session will not be dropped if a remote command times out, but any late response will be dropped. A value of zero means no timeout should be used, and yangcli will wait forever for a response.

System Variables:

$$default-operation
- The <default-operation> parameter for the <edit-config> operation will be derived from this variable.

$$error-option
- The <error-option> parameter for the <edit-config> operation will be derived from this variable
$$test-option
- The <test-option> parameter for the <edit-config> operation will be derived from this variable

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> replace \
        target=/nacm/rules/moduleRule[moduleName='yuma-system']\
        [allowed-rights='exec']

    (user prompted to fill in specified <moduleRule> element)

    RPC OK Reply 31 for session 10:

    yangcli andy@myserver>

Reference:

RFC 4741, section 7.2

restart

The restart command is used to restart the NETCONF server.

This command is only supported by the netconfd server.

The default access control configuration for netconfd will not allow any user except the designated 'superuser' account to invoke this command. Refer to the netconfd user manual for details on configuring access control.

restart command

Command type:	remote
Default parameter:	none
Min parameters:	0
Max parameters:	0
Return type:	status
YANG file:	yuma-system.yang

Positive Response:

the server will drop all sessions and restart

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> restart

    ses: session 10 shut by remote peer

    yangcli>

run

The run command is used to run a yangcli script.

Refer to the section on scripts for details on how to write a script.

The script name is the only mandatory parameter. There are 9 generic parameters (named P1 to P9) that can be used to pass string parameters to scripts. Within a script, these are referenced with local variables ($1 to $9).

The run command can be used within a script.

Scripts do not return any status or data at this time.

The run command can appear inside a script, starting a new run level. An error will occur if a loop occurs or too many nest levels are used. Up to 64 run levels are supported in yangcli.

run command

Command type:	local
Default parameter:	script
Min parameters:	1
Max parameters:	10
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

P1, P2, P3, P4, P5, P6, P7, P8, P9
- type: string
- usage: optional
- default: none
- These parameters provide a generic string parameter passing mechanism for each script invocation, similar to unix shell scripts. Within the script, the parameters $1, $2, $3, $4, $5, $6, $7, $8 and $9 will be non-NULL only if the corresponding 'Pn' parameter was set in the script invocation.
script
- type: string
- usage: mandatory
- default: none
- This parameter specifis the name of the script to be run. If a path specification is included, then it will be used. Otherwise the current script search path will be used to find the script.

System Variables:

$$runpath
- Controls where yangcli will look for files specified in the script parameter.

Positive Response:

the specified script will be executed

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error, if any remote commands are contained in the script.

Usage:

    yangcli> run connect P1=yangrocks

    runstack: Starting level 1 script /home/andy/scripts/connect

    (commands and responses are printed as if they were typed)

    runstack: Ending level 1 script /home/any/scripts/connect
    yangcli andy@myserver>

save

The save command is used to save NETCONF database edits to non-volatile storage, on the server. It is a pseudo-command, mapped to other remote commands depending on which database target is supported by the server (<candidate> or <running>).

The save command usually maps to either the commit or the copy-config command. Refer to the section on NETCONF sessions for more details.

save command

Command type:	remote
Default parameter:	none
Min parameters:	0
Max parameters:	0
Return type:	none
YANG file:	yangcli.yang

Positive Response:

The server returns one or two <ok/> responses.

Negative Response:

An error message will be printed if errors are detected locally.

An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> save

    RPC OK Reply 34 on session 10

    yangcli andy@myserver>

set-log-level

The set-log-level command is used to configure the server logging verbosity level. It is only supported by the netconfd server.

This operation is defined as nacm:secure, so only the system super-user can invoke this command by default.

set-log-level command

Command type:	remote
Default parameter:	none
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yuma-system.yang
Capabilities needed:	none

Command Parameters:

log-level
- type: enumeration (off, error, warn, info, debug, debug2, debug3)
- This mandatory parameter specifies the desired server logging verbosity level.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.

An <rpc-error> message will be printed if the server detected an error.]

    yangcli andy@myserver> set-log-level log-level=debug2

    RPC OK Reply 29 for session 10:

    yangcli andy@myserver>

set-my-session

The set-my-session command is used to configure the session customization parameters on the server. It is only supported by the netconfd server.

The session line size and default behavior for the with-defaults parameter can be controlled at this time.

Since all parameters are optional, they need to be entered in the same command line as the command name. Otherwise the $$optional system variable needs to be set to 'true'. If not, then no parameters will be sent to the server, and no session parameters will be changed.

set-my-session command

Command type:	remote
Default parameter:	none
Min parameters:	0
Max parameters:	3
Return type:	status
YANG file:	yuma-mysession.yang
Capabilities needed:	none

Command Parameters:

indent
- type: uint32 (range: 0 .. 9)
- This parameter specifies the desired number of spaces to indent for each new XML nest level, for the session. If missing, then the indent amount is not changed.
linesize
- type: uint32 (range: 40 .. 1024)
- This parameter specifies the desired line length for the session. If missing, then the current line size is not changed.
with-defaults
- type: enumeration (report-all trim explicit)
- This parameter specifies the desired default with-defaults filtering behavior for the session. If missing, the current with-defaults behavior is not changed.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.

An <rpc-error> message will be printed if the server detected an error.]

    yangcli andy@myserver> set-my-session \
            --linesize=64 --with-defaults=trim

    RPC OK Reply 25 for session 10:

    yangcli andy@myserver>

sget

The sget command is used to invoke a NETCONF <get> operation with a subtree filter.

A target node is specified (in 1 of 2 ways), and then the data structure is filled in. Only mandatory nodes will be filled in unless the $$optional system variable is set to 'true'. This step can be skipped completely with the nofill parameter.

Refer to the fill command for more details on interactive mode data structure completion.

sget command

Command type:	remote
Default parameter:	target
Min parameters:	1
Max parameters:	5
Return type:	data
YANG file:	yangcli.yang
Capabilities needed:	none
Capabilities optional:	:with-defaults

Command Parameters:

choice 'from' (not entered)
- type: choice of case 'varref' or case 'from-cli'
- usage: mandatory
- default: none
- This parameter specifies the where yangcli should get the data from, for the subtree filter target of the <get> operation. It is either a user variable or from interactive input at the command line.
  - varref
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the name of the user variable to use for the subtree filter target of the <get> operation. The parameter must exist (e.g., created with the fill command) or an error message will be printed.
  - case from-cli (not entered)
    - target
      - type: string
      - usage: optional (target or urltarget must be present)
      - default: none
      - This parameter specifies the database target node of the <get> operation. This is an ncx:schema-instance string, so any instance identifier, or absolute path expression, or something in between, is accepted.
        The escape command ('?s') can be used in parameter mode to skip a parameter completely.
        
        Entering the empty string for a parameter will cause a subtree selection node to be created instead of a content match node
    - urltarget
      - type: string
      - usage: optional
      - default: none
      - This parameter specifies the database target node of the get operation. This is an UrlPath string.
    - optional
      - type: empty
      - usage: optional
      - default: controlled by $$optional system variable
      - This parameter controls whether optional nodes within the target will be filled in. It can be used to override the $$optional system variable, when it is set to 'false'.
    - value
      - type: anyxml
      - usage: mandatory
      - default: none
      - This parameter specifies the value that should be used for the contents of the target parameter. If it is entered, then the interactive mode prompting for missing parameters will be skipped, if this parameter is complete (or all mandatory nodes present if the $$optional system variable is 'false'). For example, if the target is a leaf, then specifying this parameter will always cause the interactive prompt mode to be skipped.
nofill
- type: empty

- usage: optional
- default: none
- This parameter specifies the that no interactive prompting to fill in the contents of the specified subtree filter target will be done.
  - This causes the entire selected subtree to be requested in the filter.
  - yangcli will attempt to figure out if there can be multiple instances of the requested subtree. If not, then nofill will be the default for that target parameter.

with-defaults
- type: enumeration (none report-all report-all-tagged trim explicit)
- usage: optional
- default: none
- capabilities needed: with-defaults
- This parameter controls how nodes containing only default values are returned in the <rpc-reply>.

System Variables:

$$timeout
- The response timeout interval will be derived from this system variable.
$$with-defaults
- The <with-defaults> parameter for the <get> operation will be derived from this system variable.

Positive Response:

the server returns <data>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Output:

data
- type: anyxml
- This element will contain the requested data from the <running> database or non-config data structures.

Usage:

    yangcli andy@myserver> sget sytem

    Filling container /system: 
    RPC Data Reply 32 for session 10:
    
    rpc-reply { 
       data { 
          system { 
             sysName myserver.localdomain 
             sysCurrentDateTime 2009-07-06T02:24:19Z 
             sysBootDateTime 2009-07-05T19:22:28Z 
          } 
       } 
    }

    yangcli andy@myserver>

Reference:

RFC 4741, section 7.7

sget-config

The sget-config command is used to invoke a NETCONF <get-config> operation with a subtree filter.

A target node is specified (in 1 of 2 ways), and then the data structure is filled in. Only mandatory nodes will be filled in unless the $$optional system variable is set to 'true'. This step can be skipped completely with the nofill parameter.

Refer to the fill command for more details on interactive mode data structure completion.

sget-config command

Command type:	remote
Default parameter:	target
Min parameters:	2
Max parameters:	6
Return type:	data
YANG file:	yangcli.yang
Capabilities needed:	none
Capabilities optional:	:candidate:startup:url:with-defaults

Command Parameters:

choice 'from' (not entered)
- type: choice of case 'varref' or case 'from-cli'
- usage: mandatory
- default: none
- This parameter specifies the where yangcli should get the data from, for the subtree filter target of the <get> operation. It is either a user variable or from interactive input at the command line.
  - varref
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the name of the user variable to use for the subtree filter target of the <get> operation. The parameter must exist (e.g., created with the fill command) or an error message will be printed.
  - case from-cli (not entered)
    - target
      - type: string
      - usage: optional (target or urltarget must be present)
      - default: none
      - This parameter specifies the database target node of the <get> operation. This is an ncx:schema-instance string, so any instance identifier, or absolute path expression, or something in between, is accepted.
        The escape command ('?s') can be used in parameter mode to skip a parameter completely.
        
        Entering the empty string for a parameter will cause a subtree selection node to be created instead of a content match node
    - urltarget
      - type: string
      - usage: optional
      - default: none
      - This parameter specifies the database target node of the get-config operation. This is an UrlPath string.
    - optional
      - type: empty
      - usage: optional
      - default: controlled by $$optional system variable
      - This parameter controls whether optional nodes within the target will be filled in. It can be used to override the $$optional system variable, when it is set to 'false'.
    - value
      - type: anyxml
      - usage: mandatory
      - default: none
      - This parameter specifies the value that should be used for the contents of the target parameter. If it is entered, then the interactive mode prompting for missing parameters will be skipped, if this parameter is complete (or all mandatory nodes present if the $$optional system variable is 'false'). For example, if the target is a leaf, then specifying this parameter will always cause the interactive prompt mode to be skipped.
nofill
- type: empty

- usage: optional
- default: none
- This parameter specifies the that no interactive prompting to fill in the contents of the specified subtree filter target will be done.
  - This causes the entire selected subtree to be requested in the filter.
  - yangcli will attempt to figure out if there can be multiple instances of the requested subtree. If not, then nofill will be the default for that target parameter.

source
- type: container with 1 of N choice of leafs
- usage: mandatory
- default: none
- This parameter specifies the name of the source database for the retrieval operation.
- container contents: 1 of N:
  - candidate
    - type: empty
    - capabilities needed: :candidate
  - running
    - type: empty
    - capabilities needed: none
  - startup
    - type: empty
    - capabilities needed: startup
  - url
    - type: yang:uri
    - capabilities needed: :url, and the scheme used in the URL must be specified in the :url capability 'schemes' parameter
    - To enter this parameter, the interactive mode must be used. The shorthand mode (source=url) cannot be used, since this parameter contains a string.
with-defaults
- type: enumeration (none report-all report-all-tagged trim explicit)
- usage: optional
- default: none
- capabilities needed: with-defaults
- This parameter controls how nodes containing only default values are returned in the <rpc-reply>.

System Variables:

$$timeout
- The response timeout interval will be derived from this system variable.
$$with-defaults
- The <with-defaults> parameter for the <get-config> operation will be derived from this system variable.

Positive Response:

the server returns <data>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Output:

data
- type: anyxml
- This element will contain the requested data from the database indicated by the source parameter.

Usage:

    yangcli andy@myserver> sget-config /nacm/rules/data-rule \
        source=candidate \
        nofill

    RPC Data Reply 35 for session 10:

    rpc-reply { 
       data { 
         nacm { 
             rules { 
                data-rule nacm-tree { 
                   name nacm-tree 
                   path /nacm:nacm 
                   allowed-rights { 
                      read 
                      write 
                   } 
                   allowed-group nacm:admin 
                   comment 'access to nacm config' 
                } 
             } 
          } 
       } 
    }

    yangcli andy@myserver>

Reference:

RFC 4741, section 7.1

show

The show command is used to show program status and YANG details that may be needed during management of a NETCONF server.

There are several variants of the show command:

The show cli command prints the contents of the yangcli CLI and config file parameters.
The show global command prints the contents of one global user variable.
The show globals command prints a summary or the contents of all the global user variables.
The show local command prints the contents of one local user variable.
The show locals command prints a summary or the contents of all the local user variables.
The show module command prints meta information or help text for one YANG module.
The show modules command prints meta information for all the currently available YANG modules. IF a session is active, this will be the list of modules the server reported, plus any modules loaded with the mgrload command.
The show objects command prints the available objects or help text for the available objects.
The show session command prints the session startup screen information for the current session.
The show system command prints the contents of the yangcli system variables.
The show var command prints the contents of the specified variable.
The show vars command prints a summary or the contents of all the program variables.
The show version command prints the yangcli version number

show command

Command type:	local
Default parameter:	none
Min parameters:	1
Max parameters:	2
Return type:	data
YANG file:	yangcli.yang

Command Parameters:

choice help-mode (not entered) (default choice is 'normal')
- brief
  - type: empty
  - usage: optional
  - default: none
  - This parameter specifies that brief documentation mode should be used.
- normal
  - type: empty
  - usage: optional
  - default: none
  - This parameter specifies that normal documentation mode should be used.
- full
  - type: empty
  - usage: optional
  - default: none
  - This parameter specifies that full documentation mode should be used.

choice showtype (not entered)
- mandatory 1 of N choice for the sub-command for the show command
  - cli
    - type: empty
    - usage: mandatory
    - default: none
    - This parameter selects the yangcli CLI and configuration variables.
      - The help-mode parameter has no affect on this command.
  - global
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the name of the global variable to show information for.
      - If help-mode is 'brief', then the name, variable object, and type of the global variable object will be printed.
      - If help-mode is 'normal' or 'full', then the contents of the specified global variable will be printed.
  - globals
    - type: empty
    - usage: mandatory
    - default: none
    - This parameter specifies that information for all global variables should be printed.
      - If help-mode is 'brief', then the name, variable object, and type of each global variable object will be printed.
      - If help-mode is 'normal' or 'full', then the contents of each global variable will be printed.
  - local
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the name of the local variable to show information for.
      - If help-mode is 'brief', then the name, variable object, and type of the local variable object will be printed.
      - If help-mode is 'normal' or 'full', then the contents of the specified local variable will be printed.
  - locals
    - type: empty
    - usage: mandatory
    - default: none
    - This parameter specifies that information for all local variables should be printed.
      - If help-mode is 'brief', then the name, variable object, and type of each local variable object will be printed.
      - If help-mode is 'normal' or 'full', then the contents of each local variable will be printed.
  - module
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the name of the module to show information for.
      - If help-mode is 'brief' or 'normal', then the name, version, namespace, and source of the module will be printed.
      - If help-mode is 'full', then the module level help text for the specified module will be printed.
  - modules
    - type: empty
    - usage: mandatory
    - default: none
    - This parameter specifies that information for all available modules should be printed:
      - If help-mode is 'brief', then the name of each module will be printed.
      - If help-mode is 'normal', then the XML prefix, name, and revision date of each module will be printed.
      - If help-mode is 'full', then the name, revision date, prefix, namespace, and source of each module will be printed.
  - objects
    - type: empty
    - usage: mandatory
    - default: none
    - This parameter specifies that information for all available database objects should be printed:
      - If help-mode is 'brief', then the module name and name of each object will be printed.
      - If help-mode is 'normal', then the YANG object type, object name, and YANG base type will be printed.
        If help-mode is 'full', then brief help text will be printed for every object.
  - system
    - type: empty
    - usage: mandatory
    - default: none
    - This parameter specifies that information for all system variables should be printed.
      - The help-mode parameter has no affect on this command.
  - var
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the name of any variable to show information for.
      - If help-mode is 'brief', then the name, variable object, and type of the variable object will be printed.
      - If help-mode is 'normal' or 'full', then the contents of the specified variable will be printed.
  - vars
    - type: empty
    - usage: mandatory
    - default: none
    - This parameter specifies that information for all variables should be printed. This includes all CLI, read-only system, read-write system, global user, and local user variables.
      - If help-mode is 'brief', then the name, variable object, and type of each variable object will be printed.
      - If help-mode is 'normal' or 'full', then the contents of each variable will be printed.
  - version
    - type: empty
    - usage: mandatory
    - default: none
    - This parameter specifies that the yangcli program version string should be printed.
      - The help-mode parameter has no affect in this mode.

Positive Response:

the server prints the requested information

Negative Response:

An error message will be printed if errors are detected.

Usage:

    yangcli andy@myserver> show modules

      nc:netconf/2009-04-10 
      inet:ietf-inet-types/2009-05-13 
      ns:ietf-netconf-monitoring/2009-03-03 
      wd:ietf-with-defaults/2009-04-10 
      yang:ietf-yang-types/2009-05-13 
      nacm:nacm/2009-05-13 
      manageEvent:nc-notifications/2008-07-14 
      ncx:ncx/2009-06-12 
      ncxapp:ncx-app-common/2009-04-10 
      nt:ncxtypes/2008-07-20 
      nd:netconfd/2009-05-28 
      ncEvent:notifications/2008-07-14 
      sys:system/2009-06-04 
      t:test/2009-06-10

    yangcli andy@myserver>

shutdown

The shutdown command is used to shut down the NETCONF server.

This command is only supported by the netconfd server.

The default access control configuration for netconfd will not allow any user except the designated 'superuser' account to invoke this command. Refer to the netconfd user manual for details on configuring access control.

shutdown command

Command type:	remote
Default parameter:	none
Min parameters:	0
Max parameters:	0
Return type:	status
YANG file:	yuma-system.yang

Positive Response:

the server will drop all sessions and terminate.

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> shutdown

    ses: session 10 shut by remote peer

    yangcli>

start-timer

The start-timer command is used to start a timer to do simple performance measurements.

It is used along with the stop-timer command.

start-timer command

Command type:	local
Default parameter:	id
Min parameters:	1
Max parameters:	2
Return type:	status
YANG file:	yangcli.yang
Capabilities needed:	none
Capabilities optional:	none

Command Parameters:

id
- type: number
- usage: mandatory
- default: 0
- This parameter specifies the numeric ID of the timer.It is a number in the range 0 to 15.
restart-ok
- type: boolean
- usage: optional
- default: true
- Indicates whether the timer will be used if it is already running. If 'true', the timer will be restarted if it is already running. If 'false', an error will occur if the timer is already running.

Positive Response:

the client prints OK

Negative Response:

An error message will be printed if errors are detected locally.

Usage:

    yangcli andy@myserver> start-timer 1

OK

    yangcli andy@myserver>

stop-timer

The stop-timer command is used to stop a timer to do simple performance measurements.

It is used along with the start-timer command.

stop-timer command

Command type:	local
Default parameter:	id
Min parameters:	1
Max parameters:	2
Return type:	data
YANG file:	yangcli.yang
Capabilities needed:	none
Capabilities optional:	none

Command Parameters:

id
- type: number
- usage: mandatory
- default: 0
- This parameter specifies the numeric ID of the timer.It is a number in the range 0 to 15.
echo
- type: boolean
- usage: optional
- default: true
- Indicates whether the delta result should be printed to the log.

Positive Response:

data: the elapsed time is returned and can be used in assignment statements

Negative Response:

An error message will be printed if errors are detected locally.

Usage:

    yangcli andy@myserver> $time = stop-timer 1

    Elapsed time: 2.003345 seconds

    yangcli andy@myserver>

unlock

The unlock command is used to request a global lock on a NETCONF database. It is used, along with the lock command, to obtain exclusive write access to the NETCONF server.

unlock command

Command type:	remote
Default parameter:	none
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yuma-netconf.yang
Capabilities needed:	none
Capabilities optional:	:candidate:startup:url

Command Parameters:

target
- type: container with 1 of N choice of leafs
- usage: mandatory
- default: none
- This parameter specifies the name of the target database to be locked.
- container contents: 1 of N:
  - candidate
    - type: empty
    - capabilities needed: :candidate
  - running
    - type: empty
    - capabilities needed: none
  - startup
    - type: empty
    - capabilities needed: startup
  - url
    - type: yang:uri
    - capabilities needed: :url, and the scheme used in the URL must be specified in the :url capability 'schemes' parameter.
    - To enter this parameter, the interactive mode must be used. The shorthand mode (target=url) cannot be used, since this parameter contains a string.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> unlock target=candidate

    RPC OK Reply 38 for session 10:

    yangcli andy@myserver>

unset

The unset command is used to delete a command alias from memory.

unset command

Command type:	local
Default parameter:	name
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

name
- type: string
- usage: mandatory
- default: none
- This parameter specifies the name of the command alias to delete.

Positive Response:

Deleted alias 'foo' is printed, where 'foo' is the name parameter string

Negative Response:

An error message will be printed.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy> unset get-running

    Deleted alias 'get-running'

    yangcli andy>

uservars

The uservars command is used to clear, load, or save the global user variables.

uservars command

Command type:	local
Default parameter:	none
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

uservars-action
- type: choice
- usage: mandatory
- default: none
- clear:
  - Delete all global user variables from memory
- load [uservars-filespec]
  - Load global user variables into memory from an XML file.If the 'uservars-filespec' parameter is missing, then the default file($HOME/.yuma/yangcli_uservars.xml) will be used.
- save [uservars-filespec]
  - Save the global user variables from memory into an XML file.If the 'uservars-filespec' parameter is missing, then the default file($HOME/.yuma/yangcli_uservars.xml) will be used.

Positive Response:

A status message is printed.

Negative Response:

An error message will be printed.

Usage:

    yangcli andy> uservars clear

    Deleted all global user variables from memory

    yangcli andy>

validate

The validate command is used to check if a complete NETCONF database is valid or not.

The :validate capability must be supported by the server to use this command.

validate command

Command type:	remote
Default parameter:	none
Min parameters:	1
Max parameters:	1
Return type:	status
YANG file:	yuma-netconf.yang
Capabilities needed:	:validate
Capabilities optional:	:candidate:startup:url

Command Parameters:

target
- type: container with 1 of N choice of leafs
- usage: mandatory
- default: none
- This parameter specifies the name of the target database to be validated.
- container contents: 1 of N:
  - candidate
    - type: empty
    - capabilities needed: :candidate
  - running
    - type: empty
    - capabilities needed: none
  - startup
    - type: empty
    - capabilities needed: startup
  - url
    - type: yang:uri
    - capabilities needed: :url, and the scheme used in the URL must be specified in the :url capability 'schemes' parameter.
    - To enter this parameter, the interactive mode must be used. The shorthand mode (target=url) cannot be used, since this parameter contains a string.
  - config
    - type: anyxml
    - capabilities
    - This parameter represents an entire database, using the in-line config form, similar to the edit-config command, except this config parameter contains no nc:operation attributes and must be a complete database, not a subset.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Usage:

    yangcli andy@myserver> validate source=candidate

    RPC OK Reply 36 for session 10:

    yangcli andy@myserver>

while

The while command is used to start a conditional loop command block.

The expr parameter is used to specify the XPath expression to test if the while conditional loop block is true or false. A false block will be skipped and a true block will be executed. The command prompt will contain the string '[F]' while inside a false conditional block in interactive mode. This expression string should be entered with quotes to avoid misinterpreting any whitespace or special characters.

The docroot parameter (if present) specifies the XML document that the 'expr' parameter should be evaluated against. This is optional, since only XPath path expressions need to refer to a document.

If the 'expr' expression is true, the conditional block will be executed, and no further conditional blocks within the same if command sequence will be executed.

The maxloops parameter specifies the maximum number of iterations that should be allowed, even if the expression continues to evaluate to 'true'. This allows constant expressions to be used to construct a simple 'for' loop.

while command

...

end command

while command

Command type:	local
Default parameter:	expr
Min parameters:	1
Max parameters:	3
Return type:	status
YANG file:	yangcli.yang

Command Parameters:

expr
- type: XPath expression string
- usage: mandatory
- default: none
- This parameter specifies the XPath expression to determine if the following commands are within a true or false conditional block.
docroot
- type: anyxml
- usage: optional (typically a variable reference is used)
- default: none
- This parameter specifies the XML document that should be used if the expr XPath expression references any path nodes.
maxloops
- type: uint32
- usage: optional
- default: 65535
- Set a maximum number of loops that can be iterated for this while command. The value zero means that no maximum will be enforced. Use this mode with caution.

Positive Response:

the server returns <ok/>

Negative Response:

An error message will be printed if errors are detected locally.
- invalid XPath expression or invalid docroot reference will cause an error

Usage:

    yangcli andy@myserver> while 1 --maxloops=10

    yangcli andy@myserver> while '$x < 10'

    yangcli andy@myserver>

xget

The xget command is used to invoke a NETCONF <get> operation with an XPath filter.

xget command

Command type:	remote
Default parameter:	select
Min parameters:	1
Max parameters:	3
Return type:	data
YANG file:	yangcli.yang
Capabilities needed:	none
Capabilities optional:	:with-defaults

Command Parameters:

choice 'from' (not entered)
- type: choice of case 'varref' or case 'select'
- usage: mandatory
- default: none
- This parameter specifies the where yangcli should get the data from, for the XPath filter target of the <get> operation. It is an XPath expression, either contained in a user variable or directly from the select parameter.
  - varref
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the name of the user variable the contains the XPath expression for the XPath filter in the <get> operation. The parameter must exist (e.g., created with an assignment statement) or an error message will be printed.
  - select
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the XPath expression to use for the XPath filter in the <get> operation.
timeout
- type: uint32 (0 = no timeout, otherwise the number of seconds to wait)

- usage: optional
- default: set to the $$timeout system variable, default 30 seconds
- This parameter specifies the number of seconds to wait for a response from the server before giving up. The session will not be dropped if a remote command times out, but any late response will be dropped. A value of zero means no timeout should be used, and yangcli will wait forever for a response.

with-defaults
- type: enumeration (none report-all report-all-tagged trim explicit)
- usage: optional
- default: none
- capabilities needed: with-defaults
- This parameter controls how nodes containing only default values are returned in the <rpc-reply>.

System Variables:

$$timeout
- The response timeout interval will be derived from this system variable.
$$with-defaults
- The <with-defaults> parameter for the <get> operation will be derived from this system variable.

Positive Response:

the server returns <data>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Output:

data
- type: anyxml
- This element will contain the requested data from the <running> database or non-config data structures.

Usage:

    yangcli andy@myserver> xget //name

    RPC Data Reply 42 for session 10:

    rpc-reply { 
       data { 
          nacm { 
             rules { 
                data-rule nacm-tree { 
                   name nacm-tree 
                } 
             } 
          } 
          xpath.1 { 
             name barney 
          } 
          netconf-state { 
             datastores { 
                datastore { 
                   name { 
                      candidate 
                   } 
                } 
             } 
          } 
          netconf { 
             streams { 
                stream NETCONF { 
                   name NETCONF 
                } 
             } 
          } 
       } 
       } 
    }

    yangcli andy@myserver>

Reference:

RFC 4741, section 7.7

xget-config

The xget-config command is used to invoke a NETCONF <get-config> operation with an XPath filter.

xget-config command

Command type:	remote
Default parameter:	select
Min parameters:	2
Max parameters:	4
Return type:	data
YANG file:	yangcli.yang
Capabilities needed:	none
Capabilities optional:	:candidate:startup:url:with-defaults

Command Parameters:

choice 'from' (not entered)
- type: choice of case 'varref' or case 'select'
- usage: mandatory
- default: none
- This parameter specifies the where yangcli should get the data from, for the XPath filter target of the <get-config> operation. It is an XPath expression, either contained in a user variable or directly from the select parameter.
  - varref
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the name of the user variable the contains the XPath expression for the XPath filter in the <get-config> operation. The parameter must exist (e.g., created with an assignment statement) or an error message will be printed.
  - select
    - type: string
    - usage: mandatory
    - default: none
    - This parameter specifies the XPath expression to use for the XPath filter in the <get-config> operation.
source
- type: container with 1 of N choice of leafs
- usage: mandatory
- default: none
- This parameter specifies the name of the source database for the retrieval operation.
- container contents: 1 of N:
  - candidate
    - type: empty
    - capabilities needed: :candidate
  - running
    - type: empty
    - capabilities needed: none
  - startup
    - type: empty
    - capabilities needed: startup
  - url
    - type: yang:uri
    - capabilities needed: :url, and the scheme used in the URL must be specified in the :url capability 'schemes' parameter
    - To enter this parameter, the interactive mode must be used. The shorthand mode (source=url) cannot be used, since this parameter contains a string.
timeout
- type: uint32 (0 = no timeout, otherwise the number of seconds to wait)

- usage: optional
- default: set to the $$timeout system variable, default 30 seconds
- This parameter specifies the number of seconds to wait for a response from the server before giving up. The session will not be dropped if a remote command times out, but any late response will be dropped. A value of zero means no timeout should be used, and yangcli will wait forever for a response.

with-defaults
- type: enumeration (none report-all report-all-tagged trim explicit)
- usage: optional
- default: none
- capabilities needed: with-defaults
- This parameter controls how nodes containing only default values are returned in the <rpc-reply>.

System Variables:

$$timeout
- The response timeout interval will be derived from this system variable.
$$with-defaults
- The <with-defaults> parameter for the <get-config> operation will be derived from this system variable.

Positive Response:

the server returns <data>

Negative Response:

An error message will be printed if errors are detected locally.
An <rpc-error> message will be printed if the server detected an error.

Output:

data
- type: anyxml
- This element will contain the requested data from the source database.

Usage:

    yangcli andy@myserver> xget /nacm/groups \
        source=running

    RPC Data Reply 41 for session 10:

    rpc-reply { 
       data { 
          nacm { 
             groups { 
                group nacm:admin { 
                   groupIdentity nacm:admin 
                   userName andy 
                   userName fred 
                   userName barney 
                } 
                group nacm:guest { 
                   groupIdentity nacm:guest 
                   userName guest 
                } 
             } 
          } 
       } 
    }

    yangcli andy@svnserver>

CLI Reference

The Yuma programs uses command line interface (CLI) parameters to control program behavior.

Many parameters are supported by more than one program, such as --log.

The following sections document all the Yuma CLI parameters, in alphabetical order.

--aliases-file

The –aliases-file parameter specifies the yangcli command aliases file specification to use.

--aliases-file parameter

Syntax	string
Default:	$HOME/.yuma/.yangcli_aliases
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli –aliases-file=~/myalaises

--alt-names

The –alt-names parameter controls whether alternative names are searched when processing a UrlPath search.

--alt-names parameter

Syntax	boolean (true or false)
Default:	TRUE
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --alt-names=false

--autoaliases

The --autoaliases parameter controls automatic loading and saving of the command aliases file.

If 'true', then aliases will be loaded and saved automatically.

If 'false', then aliases must be loaded and saved manually with the 'aliases' command.

--autoaliases parameter

Syntax	boolean (true or false)
Default:	TRUE
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --autoaliases=false

--autocomp

The --autocomp parameter controls automatic completion of command and parameter names.

If true, then the program will attempt to find a partial match by comparing only the number of characters entered. For example '--log-l=debug' is the same as '--log-level=debug'.

If 'false', then command and parameter names must match exactly.

--autocomp parameter

Syntax	boolean (true or false)
Default:	TRUE
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --autocomp=false

--autohistory

The --autohistory parameter controls automatic loading and saving of the command line history buffer in the yangcli program..

If true, then when the program starts, the default command line history buffer will be loaded, and the previous set of commands will be available with the history and recall commands.

If 'false', then the command line history buffer will not be loaded and saved automatically.

The default location for this file is ~/.yuma/.yangcli_history.

--autohistory parameter

Syntax	boolean (true or false)
Default:	TRUE
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --autohistory=false

--autoload

The --autoload parameter controls automatic loading of YANG modules, as needed.

If true, then the program will attempt to find a needed YANG module.

If 'false', then YANG modules must be loaded manually.

--autoload parameter

Syntax	boolean (true or false)
Default:	TRUE
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --autoload=false

--autouservars

The --autouservars parameter controls automatic loading of global user variables.

If 'true', then the global user variables will be automatically loaded and saved.

If 'false', then the global user variables must be loaded and saved manually with the 'uservars' command.

--autouservars parameter

Syntax	boolean (true or false)
Default:	TRUE
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --autouservars=false

--bad-data

The --bad-data parameter controls how invalid parameter input is handled by the program.

ignore: Use invalid parameter values. Use with caution.
warn: Issue a warning message, but use the invalid data anyway.
check: Prompt the user interactively, and check if the invalid data should be used, or a new value re-entered.
error: Do not use invalid parameter values.

--bad-data parameter

Syntax	enumeration: ignore warn check error
Default:	check
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli ----bad-data=warn

--batch-mode

The --batch-mode parameter specifies that the interactive CLI will not be used.

Instead, if a script is provided with the 'run-script' parameter, or a command provided with the 'run-command' parameter, then it will be executed automatically before the program exits. This mode can be used to invoke NETCONF commands from Unix shell scripts.

--batch-mode parameter

Syntax	empty
Default:	none
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --batch-mode \ --run-script=~/run-tests

--config

The --config parameter specifies the name of a Yuma configuration file that contains more parameters to process, in addition to the CLI parameters.

Refer to the 'Configuration Files' section for details on the format of this file.

--config parameter

Syntax	string: complete file specification of the text file to parse for more parameters.
Default:	/etc/yuma/<program-name>.conf
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli testmod \ --config=~/testconf.conf

--datapath

The --datapath parameter specifies the directory search path to use while searching for data files. It consists of a colon (':') separated list of path specifications, commonly found in Unix, such as the $PATH environment variable.

This parameter overrides the $YUMA_DATAPATH environment variable, if it is present.

--datapath parameter

Syntax	string: list of directory specifications
Default:	$YUMA_DATAPATH environment variable
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli \ --datapath=”~/work2:~/data”

--default-module

The --default-module parameter specifies the module to search for identifiers, after the netconf and ncx modules have been checked. This allows a specific module to match identifier names first, before all modules are searched at once. This can avoid a collision if the same identifier value is used in more than one module.

--default-module parameter

Syntax	string: module name without any path or file extension included.
Default:	none
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --default-module=testmod

--deviation

The --deviation parameter is a leaf-list of modules that should be loaded automatically when the program starts, as a deviation module. In this mode, only the deviation statements are parsed and then made available later when the module that contains the objects being deviated is parsed.

The deviations must be known to the parser before the target module is parsed.

This parameter is used to identify any modules that have deviation statements for the set of modules being parsed (e.g., --module and --subtree parameters).

A module can be listed with both the --module and --deviation parameters, but that is not needed unless the module contains external deviations. If the module only contains deviations for objects in the same module, then the --deviation parameter does not need to be used.

The program will attempt to load each module in deviation parsing mode, in the order the parameters are entered.

For the netconfd program, If any modules have fatal errors then the program will terminate.

For the yangdump and yangcli programs, each module will be processed as requested.

--deviation parameter

Syntax	module name or filespec
Default:	none
Min Allowed:	0
Max Allowed:	unlimited
Supported by:	netconfdyangcliyangdump
Example:	yangcli \ --module=test1 \ --deviation=test1_deviations

--display-mode

The --display-mode parameter controls how data is displayed in the program.

The qualified names (identifiers, idenitityref, XPath) within a text configuration can be generated several ways. This is needed because sibling nodes in different XML namespaces can have the same name.

--display-mode values

enum value	description	example
plain	no prefix, just local-name	sysBootError
prefix	XML prefix and local-name	sys:sysBootError
module	module name and local name	system:sysBootError
xml	XML format	<sysBootError xmlns=”foo”>
xml-nons	XML format without namespace (xmlns) attributes	<sysBootError>
json	JSON format	{ “sysBootError” : “blah” }

When saving configuration files in non-volatile storage, then it is suggested that only 'module' or 'xml' modes be used, since these are the only deterministic modes.

The set of XML prefixes in use at any one time is not persistent, and cannot be relied upon, unless the namespace declarations are saved (xml mode) or the module names are saved (module mode).

display-mode parameter

Syntax	enumeration: plain prefix module xml xml-nons json
Default:	plain
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --display-mode=module

--feature-disable

The --feature-disable parameter directs all programs to disable a specific feature.

This parameter is a formatted string containing a module name, followed by a colon ':', followed by a feature name, e.g.,

test:feature1

It is an error if a --feature-enable and --feature-disable parameter specify the same feature.

Parameters for unknown features will be ignored.

--feature-disable parameter

Syntax	formatted string (module:feature
Default:	none
Min Allowed:	0
Max Allowed:	unlimited
Supported by:	yangcliyangdiffyangdumpnetconfd
Example:	yangcli --feature-disable=test:feature1

--feature-enable

The --feature-enable parameter directs all programs to enable a specific feature.

This parameter is a formatted string containing a module name, followed by a colon ':', followed by a feature name, e.g.,

test:feature1

It is an error if a --feature-disable and --feature-enable parameter specify the same feature.

Parameters for unknown features will be ignored.

--feature-enable parameter

Syntax	formatted string (module:feature
Default:	none
Min Allowed:	0
Max Allowed:	unlimited
Supported by:	yangcliyangdiffyangdumpnetconfd
Example:	yangcli--feature-enable=test:feature1

--feature-enable-default

The --feature-enable-default parameter controls how yangdump will generate C code for YANG features by default.

If 'true', then by default, features will be enabled.

If 'false', then by default, features will be disabled.

If a --feature-enable or --feature-disable parameter is present for a specific feature, then this parameter will be ignored for that feature.

--feature-enable-default parameter

Syntax	boolean (true or false)
Default:	TRUE
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcliyangdiffyangdumpnetconfd
Example:	yangcli \ --feature-enable-default=false

--fixorder

The --fixorder parameter controls whether PDU parameters will be automatically sent in NETCONF PDUs in the correct order.

If 'true', the schema-defined, canonical order will be used.

If 'false', the specified order that parameters are entered will be used for the PDU order as well.

--fixorder parameter

Syntax	boolean (true or false)
Default:	TRUE
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --fixorder=false

--force-target

The --force-target parameter controls whether the candidate or running configuration datastore will be used as the default edit target, when both are supported by the server.

--force-target parameter

Syntax	enum (candidate or running)
Default:	candidate
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --force-target=running

--help

The --help parameter causes program help text to be printed, and then the program will exit instead of running as normal.

This parameter can be combined with the --help-mode parameter to control the verbosity of the help text. Use --brief for less, and --full for more than the normal verbosity.

This parameter can be combined with the --version parameter in all programs. It can also be combined with the --show-errors parameter in yangdump.

The program configuration parameters will be displayed in alphabetical order, not in schema order.

--help parameter

Syntax	empty
Default:	none
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli --help

--help-mode

The --help-mode parameter is used to control the amount of detail printed when help text is requested in some command. It is always used with another command, and makes no sense by itself. It is ignored unless used with the --help parameter.

--help-mode parameter

Syntax	choice of 3 empty leafs --brief --normal --full
Default:	normal
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli --help --help-mode=full

default choice: normal
choice help-mode
- brief
  - type: empty
  - This parameter specifies that brief documentation mode should be used.
- normal
  - type: empty
  - This parameter specifies that normal documentation mode should be used.
- full
  - type: empty
  - This parameter specifies that full documentation mode should be used.

--indent

The --indent parameter specifies the number of spaces that will be used to add to the indentation level, each time a child node is printed during program operation.

--indent parameter

Syntax	uint32 (0 .. 9)
Default:	3
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli --indent=4

--log

The --log parameter specifies the file name to be used for logging program messages, instead of STDOUT. It can be used with the optional --log-append and --log-level parameters to control how the log file is written.

--log parameter

Syntax	string: log file specification
Default:	none
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli --log=~/test.log&

--log-append

The --log-append parameter specifies that the existing log file (if any) should be appended , instead of deleted. It is ignored unless the --log parameter is present.

--log-append parameter

Syntax	empty
Default:	none
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli --log-append \ --log=~/test.log&

--log-level

The --log-level parameter controls the verbosity level of messages printed to the log file or STDOUT, if no log file is specified.

The log levels are incremental, meaning that each higher level includes everything from the previous level, plus additional messages.

There are 7 settings that can be used:

none: All logging is suppressed. Use with extreme caution!
error: Error messages are printed, indicating problems that require attention.
warn: Warning messages are printed, indicating problems that may require attention.
info: Informational messages are printed, that indicate program status changes.
debug: Debugging messages are printed that indicate program activity.
debug2: Protocol debugging and trace messages are enabled.
debug3: Very verbose debugging messages are enabled. This has an impact on resources and performance, and should be used with caution.
debug4: Maximum debugging messages are enabled.

log-level parameter

Syntax	enumeration: off error warn info debug debug2 debug3 debug4
Default:	--info (--debug for DEBUG builds)
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli --log-level=debug \ --log=~/test.log&

--match-names

The --match-names parameter specifies how names are matched when performing UrlPath searches.

The following values are supported::

exact

The name must exactly match the node name for all characters in both name strings.

exact-nocase

The name must match the node name for all characters in both name strings.

Strings are not case-sensitive.

one

The name must exactly match the first N characters of just one node name, which must be the only partial name match found.

one-nocase

The name must exactly match the first N characters of just one node name, which

must be the only partial name match found. Strings are not case-sensitive.

first

The name must exactly match the first N characters of any node name. The first one

found will be used.

first-nocase

The name must exactly match the first N characters of any node name. The first one

found will be used. Strings are not case-sensitive.

--match-names parameter

Syntax	enum: exact exact-nocase one one-nocase first first-nocase
Default:	one-nocase
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --match-names=exact

--modpath

The --modpath parameter specifies the YANG module search path to use while searching for YANG files. It consists of a colon (':') separated list of path specifications, commonly found in Unix, such as the $PATH environment variable.

This parameter overrides the $YUMA_MODPATH environment variable, if it is present.

--modpath parameter

Syntax	string: list of directory specifications
Default:	$YUMA_MODPATH environment variable
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli \ --modpath=”~/testmodules:~/modules:~/trunk/netconf/modules”

--module

The --module parameter is a leaf-list of modules that should be loaded automatically when the program starts.

The program will attempt to load each module in the order the parameters were entered.

For the netconfd program, If any modules have fatal errors then the program will terminate.

For the yangdump program, each module will be processed as requested.

--module parameter

Syntax	module name or filespec
Default:	none
Min Allowed:	0
Max Allowed:	unlimited
Supported by:	netconfdyangcliyangdump
Example:	yangcli \ --module=test1 \ --module=test2

--ncport

The --ncport parameter specifies the TCP port number that should be used for NETCONF sessions.

This parameter specifies the TCP port number to use when a NETCONF session is created during the startup of the program. The parameter can only be entered once.

--ncport parameter

Syntax	uint32
Default:	830
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --server=myserver --ncport=22 \ --user=fred --password=mypassword

--password

The --password parameter specifies the password string that should be used when a NETCONF session is connected during the startup of the program.

--password parameter

Syntax	string
Default:	none
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --server=myserver \ --password=yangrocks \ --user=andy

--private-key

The --private-key parameter specifies the file path specification for the file containing the client-side private key.

If both 'public-key' and 'private-key' files are present, the client will attempt to connect to the server using these keys. If this fails, or not done, then password authentication will be attempted.

--private-key parameter

Syntax	string
Default:	$HOME/.ssh/id_rsa
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli –private-key=~/.ssh/mykey

--protocols

The --protocols parameter specifies which protocol versions the program or session will attempt to use. Empty set is not allowed.

--protocols parameter

Syntax	bits
Default:	“netconf1.0 netconf1.1”
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcli
Example:	yangcli –protocols=netconf1.0

--public-key

The --public-key parameter specifies the file path specification for the file containing the client-side public key.

If both 'public-key' and 'private-key' files are present, the client will attempt to connect to the server using these keys. If this fails, or not done, then password authentication will be attempted.

--public-key parameter

Syntax	string
Default:	$HOME/.ssh/id_rsa.pub
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli –public-key=~/.ssh/mykey.pub

--runpath

The --runpath parameter specifies the directory search path to use while searching for script files. It consists of a colon (':') separated list of path specifications, commonly found in Unix, such as the $PATH environment variable.

This parameter overrides the $YUMA_RUNPATH environment variable, if it is present.

--runpath parameter

Syntax	string: list of directory specifications
Default:	$YUMA_RUNPATH environment variable
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli \ --runpath=”~/testscripts”

--run-command

The --run-command parameter specifies a command will be invoked upon startup.

In the yangcli program, if the auto-connect parameters are provided, then a session will be established before running the command.

--run-command parameter

Syntax	string
Default:	none
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli \ --run-command="history load=~/test3-history"

--run-script

The --run-script parameter specifies a script will be invoked upon startup.

In the yangcli program, if the auto-connect parameters are provided, then a session will be established before running the script.

--run-script parameter

Syntax	string (file specification)
Default:	none
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli \ --run-script="test3-start"

--server

The --server parameter specifies the IP address or DNS name of the NETCONF server that should be connected to automatically, when the program starts.

--server parameter

Syntax	string:IP address or DNS name
Default:	none
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --server=myserver

--subdirs

The --subdirs parameter controls whether sub-directories should be searched or not, if they are found during a module search.

If false, the file search paths for modules, scripts, and data files will not include sub-directories if they exist in the specified path.

--subdirs parameter

Syntax	boolean
Default:	TRUE
Min Allowed:	0
Max Allowed:	1
Supported by:	yangdump
Example:	yangcli --subdirs=false

--time-rpcs

The --time-rpcs parameter is used to measure the round-trip time of each <rpc> request and <rpc-reply> at the session level. Echo the elapsed time value to screen if in interactive mode, as well as the log if the log is a file instead of stdout. The $$time-rpcs system variable is derived from this parameter.";

--time-rpcs parameter

Syntax	boolean
Default:	FALSE
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --time-rpcs=true

--timeout

The --timeout parameter specifies the number of seconds that should pass before giving up on a response during a NETCONF session. The value zero means wait forever (no timeout).

--timeout parameter

Syntax	uint32 (0 for no timeout; otherwise number of seconds to wait)
Default:	30 seconds
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --timeout=0

--transport

The --transport parameter specifies the NETCONF transport protocol to use.

This parameter is also supported in the 'connect' command.

There are 2 values supported:

ssh: standard NETCONF SSH transport (RFC 4742 or RFC 6242)
tcp: tail-f NETCONF over TCP transport
Note that netconfd does not support this transport protocol!

I

--timeout parameter

Syntax	Enum (ssh or tcp)
Default:	ssh
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --transport=tcp

--use-xmlheader

The --use-xmlheader parameter specifies how file result variables will be written for XML files.

Controls whether the XML preamble header will be written or not.

--use-xmlheader parameter

Syntax	boolean
Default:	TRUE
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --use-xmlheader=false

--user

The --user parameter specifies the user name string on the NETCONF server that should be used when establishing a NETCONF session.

--user parameter

Syntax	string:user name
Default:	none
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli --user=admin \ --server=myserver

--uservars-file

The --uservars-file parameter contains the file specification of the user global variables XML file to use.

--uservars-file parameter

Syntax	string:filespec
Default:	$HOME/.yuma/yangcli_uservars.xml
Min Allowed:	0
Max Allowed:	1
Supported by:	yangcli
Example:	yangcli –uservars-file=~/myvars.xml

--version

The --version parameter causes the program version string to be printed, and then the program will exit instead of running as normal.

All Yuma version strings use the same format:

DEBUG: <major>.<minor>.<svn-build-version>

or

NON-DEBUG: <major>.<minor>-<release>

An example version number that may be printed:

    yangcli 1.15-4

This parameter can be combined with the --help parameter.

--version parameter

Syntax	empty
Default:	none
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli --version

--warn-idlen

The --warn-idlen parameter controls whether identifier length warnings will be generated.

The value zero disables all identifier length checking. If non-zero, then a warning will be generated if an identifier is defined which has a length is greater than this amount.

--warn-idlen parameter

Syntax	uint32: 0 to disable, or 8 .. 1023
Default:	64
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli --warn-idlen=50

--warn-linelen

The --warn-linelen parameter controls whether line length warnings will be generated.

The value zero disables all line length checking. If non-zero, then a warning will be generated if a YANG file line is entered which has a length is greater than this amount.

Tab characters are counted as 8 spaces.

--warn-linelen parameter

Syntax	uint32: 0 to disable, or 40 .. 4095
Default:	72
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli --warn-linelen=79

--warn-off

The --warn-off parameter suppresses a specific warning number.

The error and warning numbers, and the default messages, can be viewed with the yangdump program by using the --show-errors configuration parameter.

The specific warning message will be disabled for all modules. No message will be printed and the warning will not count towards the total for that module.

--warn-off parameter

Syntax	uint32: 400 .. 899
Default:	none
Min Allowed:	0
Max Allowed:	499
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli --warn-off=435 # revision order not descending

--yuma-home

The --yuma-home parameter specifies the project directory root to use when searching for files.

If present, this directory location will override the '$YUMA_HOME environment variable, if it is set. If this parameter is set to a zero-length string, then the $YUMA_HOME environment variable will be ignored.

The following directories are searched when either the $YUMA_HOME environment variable or this parameter is set:

$YUMA_HOME/modules
- This sub-tree is searched for YANG files.
$YUMA_HOME/data
- This directory is searched for data files.
$YUMA_HOME/scripts
- This directory is searched for yangcli script files.

yuma-home parameter

Syntax	string: directory specification
Default:	$YUMA_HOME environment variable
Min Allowed:	0
Max Allowed:	1
Supported by:	netconfdyangcliyangdiffyangdump
Example:	yangcli \ --yuma-home=~/sw/netconf \ --log=~/test.log&

Yuma yangcli Manual

Contents

Preface

Legal Statements

Additional Resources

WEB Sites

Mailing Lists

Conventions Used in this Document

yangcli User Guide

Introduction

Features

Starting yangcli

Stopping yangcli

Statements

Commands

Variables

Files

Scripts

Configuration Parameter List

Invoking Commands

Command Prompt

Command Name

ncx:default-parm Extension

Parameter Mode Escape Commands

Using XPath Expressions

Special Parameter Handling

Command Completion

Command Line Editing

Command History

Command Responses

NETCONF Sessions

Connection Startup Screen

Server Tailored Context

Retrieving Data

Modifying Data

Using Notifications

Configuration Parameters That Affect Sessions

Trouble-shooting NETCONF Session Problems

Command Reference

alias

aliases

cd

close-session

commit

connect

copy-config

create

create-subscription

delete

delete-config

discard-changes

edit-config

elif

else

end

eval

eventlog

fill

get

get-config

get-locks

get-my-session

get-schema

help

history

if

insert

kill-session

list

load

lock

log-debug

log-error

log-info

log-warn

merge

mgrload

no-op

pwd

quit