Book Image

Network Automation Cookbook

By : Karim Okasha
Book Image

Network Automation Cookbook

By: Karim Okasha

Overview of this book

Network Automation Cookbook is designed to help system administrators, network engineers, and infrastructure automation engineers to centrally manage switches, routers, and other devices in their organization's network. This book will help you gain hands-on experience in automating enterprise networks and take you through core network automation techniques using the latest version of Ansible and Python. With the help of practical recipes, you'll learn how to build a network infrastructure that can be easily managed and updated as it scales through a large number of devices. You'll also cover topics related to security automation and get to grips with essential techniques to maintain network robustness. As you make progress, the book will show you how to automate networks on public cloud providers such as AWS, Google Cloud Platform, and Azure. Finally, you will get up and running with Ansible 2.9 and discover troubleshooting techniques and network automation best practices. By the end of this book, you'll be able to use Ansible to automate modern network devices and integrate third-party tools such as NAPALM, NetBox, and Batfish easily to build robust network automation solutions.
Table of Contents (15 chapters)

Controlling routing within a VPC using Ansible

In this recipe, we will outline how to adjust the routing inside an AWS VPC in order to control the traffic forwarding within the subnets inside a VPC. Controlling the routing within a VPC allows us to customize the VPC design and how the traffic is forwarded within the VPC, as well as how to exit the VPC to external destinations.

Getting ready

The Ansible control machine must have internet reachability and the VPCs must already be provisioned as per the previous recipe.

How to do it...

  1. Update the eu_prod_vpc.yml file with...