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:

<?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>

Verifying the Commit Script Output

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

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:

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...