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Example: Generating a Transient Change

Using a commit script, make a transient configuration change that sets PPP encapsulation on all SONET/SDH interfaces with the IPv4 protocol family enabled:

XSLT Syntax



<?xml version="1.0" standalone="yes"?>


<xsl:stylesheet version="1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
    xmlns:junos="http://xml.juniper.net/junos/*/junos" 
    xmlns:xnm="http://xml.juniper.net/xnm/1.1/xnm" 
    xmlns:jcs="http://xml.juniper.net/junos/commit-scripts/1.0">


    <xsl:import href="../import/junos.xsl"/>


    <xsl:template match="configuration"> 
        <xsl:for-each select="interfaces/interface[starts-with(name, 'so-')                           and unit/family/inet]">
            <xsl:call-template name="jcs:emit-change">
                <xsl:with-param name="tag" select="'transient-change'"/>
                <xsl:with-param name="content">
                    <encapsulation>ppp</encapsulation>
                </xsl:with-param>
            </xsl:call-template>
        </xsl:for-each> 
    </xsl:template> 


</xsl:stylesheet>

SLAX Syntax



version 1.0;


ns junos = "http://xml.juniper.net/junos/*/junos";
ns xnm = "http://xml.juniper.net/xnm/1.1/xnm";
ns jcs = "http://xml.juniper.net/junos/commit-scripts/1.0";


import "../import/junos.xsl";
match configuration {
    for-each (interfaces/interface[starts-with(name, 'so-') and unit/family/inet]) {
        call jcs:emit-change($tag = 'transient-change') {
            with $content = {
                <encapsulation> "ppp";
            }
        }
    }
}

Verifying the Commit Script Output

To display a detailed trace of commit script processing, issue the commit check | display detail command:

[edit]

user@host# commit check | display detail

2005-06-14 12:07:30 PDT: reading commit script configuration
2005-06-14 12:07:30 PDT: testing commit script configuration
2005-06-14 12:07:30 PDT: opening commit script '/var/db/scripts/commit/transient.xsl'
2005-06-14 12:07:30 PDT: reading commit script 'transient.xsl'
2005-06-14 12:07:30 PDT: running commit script 'transient.xsl'
2005-06-14 12:07:30 PDT: processing commit script 'transient.xsl'
2005-06-14 12:07:30 PDT: no errors from transient.xsl
2005-06-14 12:07:30 PDT: saving commit script changes
2005-06-14 12:07:30 PDT: summary: changes 0, transients 2 (allowed), syslog 0
2005-06-14 12:07:30 PDT: no commit script changes
2005-06-14 12:07:30 PDT: exporting juniper.conf
2005-06-14 12:07:30 PDT: loading transient changes
2005-06-14 12:07:30 PDT: loading commit script changes(transient)
2005-06-14 12:07:30 PDT: finished loading commit script changes
2005-06-14 12:07:30 PDT: expanding groups
2005-06-14 12:07:30 PDT: finished expanding groups
2005-06-14 12:07:30 PDT: setup foreign files
2005-06-14 12:07:30 PDT: propagating foreign files
2005-06-14 12:07:31 PDT: complete foreign files
2005-06-14 12:07:31 PDT: daemons checking new configuration
configuration check succeeds

To display the configuration with the transient change, issue the show interfaces | display commit-scripts configuration mode command. If there are one or more SONET/SDH interfaces with the IPv4 protocol family enabled, the output is similar to this:

[edit]

user@host# show interfaces | display commit-scripts

... # Other configured interface types ...
so-1/2/3 {
    mtu 576;

	encapsulation ppp; /* Added by transient change. */
    unit 0 {
        family inet {
            address 10.0.0.3/32;
        }
    }
}
so-1/2/4 {

	encapsulation ppp; /* Added by transient change. */
    unit 0 {
        family inet {
            address 10.0.0.4/32;
        }
    }
}
so-2/3/4 {
    encapsulation cisco-hdlc; # Not affected by this script, because IPv4 protocol
                              # family is not configured on this interface.
    unit 0 {
        family mpls;
    }
}
... # Other configured interface types ...

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