Grasp the Power of Junos Automation Scripts

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Junos automation scripts are a powerful tool for network engineers studying for the JNCIS-ENT certification. These scripts allow you to automate repetitive tasks, troubleshoot network issues, and customize your network operations. This blog post will provide an overview of Junos automation scripts and how they can be used to enhance your network engineering skills.

What are Junos Automation Scripts?

Junos automation scripts are scripts written in SLAX, XSLT, or Python that can be used to automate tasks on Junos devices. These scripts can be run directly on the device or from a remote location. They can be used to automate operational and configuration tasks, and to customize the output of operational commands.

Types of Junos Automation Scripts

There are three types of Junos automation scripts:

  1. Op scripts: These scripts automate operational tasks and can be used to customize the output of operational commands.

  2. Commit scripts: These scripts are run during the commit process and can be used to enforce configuration policies.

  3. Event scripts: These scripts are triggered by specific events on the device and can be used to automate responses to these events.

How to Write a Junos Automation Script

Here is a basic example of how to write an op script in SLAX:

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 / {
    <op-script-results> {
        <output> "Hello, World!" </output>
    }
}

This script simply outputs the string "Hello, World!" when run.

How to Run a Junos Automation Script

To run a Junos automation script, you need to first load it onto the device. You can do this using the file copy command:

file copy /var/tmp/hello_world.slax /var/db/scripts/op/

Then, you need to configure the device to run the script. You can do this using the set system scripts op file command:

set system scripts op file hello_world.slax

Finally, you can run the script using the op command:

op hello_world.slax

Conclusion

Junos automation scripts are a powerful tool for network engineers. They allow you to automate tasks, troubleshoot issues, and customize your network operations. By mastering Junos automation scripts, you can enhance your skills and increase your efficiency as a network engineer.

© Ben Jacobson.RSS