Automation

REST API for Network Engineers

This is the first, introductory, post in a series dedicated to REST APIs for Network Engineers. In this post we’ll learn what REST API is, what are the most common tools and ways to consume it. Later in the series I’ll show how to build a REST client to control UnetLab, a very popular network emulation environment.

Automating the Build of a FlexVPN Network

In this post I’ll show how to automatically build configuration files for Hubs and Spokes in FlexVPN network topology

Automating New Network Build - Part 2 (BGP)

In this post we’ll have a look at how to automate a typical BGP setup

Automating New Network Build - Part 1

This post will demonstrate how to automate the build of a typical enterprise branch network consisting of a pair of WAN routers, a core switch and 3 access layer switches. I will show how to create the initial bootstrap configuration and enable basic routing with OSPF

Automating Legacy Network Configuration

In this post I’ll show how to take an already established network, pull out some of the common configuration pieces and put them all into a standard Ansible environment

Network Configuration Automation

This post will give a brief overview of network configuration automation, describe its challenges and benefits and will set off a series of posts showing how to automate a configuration of a typical enterprise network

Network TDD Quickstart Guide

This post gives a quick overview of how to use network Test Driven Development framework. As an example I’ll use a simplified version of a typical enterprise network with a Data Centre/HQ and a Branch office. A new branch is being added and the task is to configure routing for that branch using a TDD approach. First we’ll devise a set of TDD scenarios to be tested and then, going through each one of them, modify routing to make sure those scenarios don’t fail (a so-called red-green-refactor approach)

Verifying TDD Scenarios

Writing a custom Ansible module to verify TDD scenarios

Developing Custom Ansible Modules

IP Address Information Collection With Custom Ansible Modules

Getting Started With Ansible for Cisco IOS

Ansible quickstart guide for Cisco IOS