Example: Restart an FPC Using an Op Script
This example uses an op script to restart a Flexible PIC Concentrator (FPC).
Requirements
This example uses a device running Junos OS that contains a Flexible PIC Concentrator (FPC) or equivalent component.
Overview and Op Script
The following script, which is shown in both XSLT and SLAX formats,
restarts an FPC given the slot number in which the FPC resides. The
user provides the slot number in the command-line interface (CLI)
when the script is invoked. The script stores the slot number as the
value of the parameter slot and constructs
the request chassis fpc command string to include the slot
number of the FPC to restart. There is no Junos Extensible Markup
Language (XML) equivalent for the request chassis commands.
Therefore, this script invokes the request chassis fpc command
directly rather that using a remote procedure call (RPC).
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:variable name="arguments">
<argument>
<name>slot</name>
<description>Slot number of the FPC</description>
</argument>
</xsl:variable>
<xsl:param name="slot"/>
<xsl:template match="/">
<op-script-results>
<xsl:variable name="restart">
<command>
<xsl:value-of select="concat('request chassis fpc slot ', $slot,'
restart')"/>
</command>
</xsl:variable>
<xsl:variable name="result" select="jcs:invoke($restart)"/>
<output>
<xsl:text>Restarting the FPC in slot </xsl:text>
<xsl:value-of select="$slot"/>
<xsl:text>. </xsl:text>
<xsl:text>To verify, issue the "show chassis fpc" command.</xsl:text>
</output>
</op-script-results>
</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";
var $arguments = {
<argument> {
<name> "slot";
<description> "Slot number of the FPC";
}
}
param $slot;
match / {
<op-script-results> {
var $restart = {
<command> 'request chassis fpc slot ' _ $slot _ ' restart';
}
var $result = jcs:invoke($restart);
<output> {
expr "Restarting the FPC in slot ";
expr $slot;
expr ". ";
expr "To verify, issue the \"show chassis fpc\" command.";
}
}
}Configuration
Procedure
Step-by-Step Procedure
To download, enable, and test the script:
Copy the XSLT or SLAX script into a text file, name the file restart-fpc.xsl or restart-fpc.slax as appropriate, and download it to the /var/db/scripts/op/ directory on the device.
Only users who belong to the Junos OS
super-userlogin class can access and edit files in this directory.In configuration mode, include the
filestatement at the[edit system scripts op]hierarchy level and restart-fpc.xsl or restart-fpc.slax as appropriate.[edit system scripts op] user@host# set file restart-fpc.(slax | xsl)
Issue the
commit and-quitcommand to commit the configuration and to return to operational mode.[edit] user@host# commit and-quit
Execute the op script by issuing the
op restart-fpc slot slot-numberoperational mode command.
Verification
Verifying Op Script Execution
Purpose
Verify that the FPC has been restarted and is currently online.
Action
Execute the op script by issuing the op filename operational mode command. Supply the slot number of the FPC as an argument.
user@host> op restart-fpc slot 0
When you execute the script, you should see output similar to the following:
Restarting the FPC in slot 0. To verify, issue the "show chassis fpc" command.
Issue the show chassis fpc detail fpc-slot operational mode command.
user@host> show chassis fpc detail 0 Slot 0 information: State Online Temperature 36 degrees C / 96 degrees F Total CPU DRAM 1024 MB Total RLDRAM 256 MB Total DDR DRAM 4096 MB Start time: 2009-08-11 21:20:30 PDT Uptime: 0 hours, 1 minutes, 50 seconds Max Power Consumption 335 Watts
Meaning
The show chassis fpc detail command output
displays the state, start time, uptime, and characteristics for the
FPC. Verify that the FPC was restarted by checking the start time
and uptime of the FPC. Verify the status of the restarted FPC by checking
the state. If the status is Present, the FPC is coming up but is not yet online. If the status is Online, the FPC is online and running.