Regular expressions for Network Engineers - basics

What? Who needs regular expressions in the age of automation? I do! And maybe you need them too. Personally I think that there are times when regular expressions are the »

NAPALM-Ansible - Automatic validation - part 2

This is the second post in the series on Napalm validation in which we will explore more options available to us for writing validation tests. First part can be found »

Python - sort IP addresses from the Linux shell

Have you ever found yourself needing to quickly sort IP addresses directly from the Linux shell? You just ran grep against all of your configs looking for IPs in some »

NAPALM-Ansible - Automatic validation - part 1

Network automation is not just about configuration management. Equally, if not more, important is validation of the state and models. After all, what is automating configuration changes good for if »

Ansible - Pass extra variables to Playbook

Let's talk about passing extra Playbook variables from command line. First off, why would you want to do it? Maybe you want to execute task only if a variable is »