Operation Script Overview

You can execute operation scripts from the JUNOS CLI or from within an event policy. For information about event policies, see Running Self-Diagnostics with Event Policies.

Operation scripts allow you to perform various actions, including the following:

• Automatically diagnose and fix problems in your network by building and running an operational mode command, receiving the command output, inspecting the output, and determining the next appropriate action. This process can be repeated until the source of the problem is determined and reported to the CLI.
• Monitor the overall status of the router by creating a general operation script that periodically checks network warning parameters, such as high CPU usage. The general operation script can be overridden by user-defined scripts.
• Customize the output of CLI operational mode commands using printf statements.
• If there is a known problem in the JUNOS software, an operation script can ensure your router is configured to avoid or work around the problem.
• Change your router's configuration in response to a problem.

The scripting language you use for writing operation scripts is Extensible Stylesheet Language Transformations (XSLT). XSLT operation scripts are based on JUNOScript Extensible Markup Language (XML).