April 2016
Intermediate to advanced
684 pages
17h 34m
English
Content preview from Automating Junos AdministrationBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 6. Op Scripts
Op and event scripts are powerful tools you can use to automate the operation of your router. Have you ever wished you had a way to script a CLI command on the router? Or that you could program your router to always run a particular CLI command when a particular event occurs? Op and event scripts can do these things and more.
In this chapter, we will focus on op scripts. However, much of this information will also help you work with event scripts, which we cover in Chapter 7.
Use Cases
Before diving into the way op scripts work, let’s take a moment to look at the big picture: what can you do with op and event scripts? To give you an idea, let’s look at some use cases.
Custom CLI Commands
Junos has a robust and useful CLI, with many, many commands to cover a variety of situations. Using the CLI, it is fairly easy to perform just about any action you desire. However, there are times when you could make things even easier if you were able to script command sequences.
Consider this example. Imagine your network has a monitoring
system that reports when a BGP session goes down. Your standard response
is to log in to the router, run show interfaces
terse to find the interface that carries the session, and then
run show interfaces extensive to look
at the details for that interface.
You could simplify this process by simply being able to run a
single command that automatically figures out which interface has the
destination and then runs show interfaces
extensive for that ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.