You're reading from Network Automation Cookbook Over 100 recipes to effectively configure and manage network infrastructure with Ansible

Product type Paperback

Published in Aug 2025

Publisher Packt

ISBN-13 9781835887981

Length 566 pages

Edition 2nd Edition

Languages

Python

Tools

Ansible

Concepts

Networking

Authors (3):

Christian Adell

Jeffrey Kala

Karim Okasha

View More author details

Table of Contents (23) Chapters

Preface

1. Part 1: Getting Started with Ansible

2. Why Ansible for Network Automation? FREE CHAPTER

3. Building Blocks of Ansible

4. Advanced Ansible Concepts

5. Part 2: Managing Network Infrastructure with Ansible

6. Building Data Center Networks with Arista

7. Automating a Juniper Network Core Using Ansible

8. Managing Nokia SR Devices Using Ansible

9. Administering a Multi-Vendor Network with NAPALM and Ansible

10. Part 3: Managing Cloud Networking with Ansible

11. Deploying and Operating AWS Networking

12. Deploying and Operating Azure Networking

13. Deploying and Operating GCP Networking

14. Part 4: Integrating Ansible

15. Network Validation with Batfish

16. Building a Network Inventory with Nautobot

17. Simplifying Automation with AWX

18. Event-Driven Automation with Ansible

19. Terraform and Ansible Dancing Together

20. Index

21. Other Books You May Enjoy

Appendix - The Lab

Generating the overlay configuration

In this recipe, you will generate the configuration for the overlay iBGP EVPN as the control plane for VXLAN tunnels across our leaf-spine fabric in our topology. The iBGP EVPN overlay network uses internal Border Gateway Protocol (iBGP) to distribute EVPN control plane information, enabling Layer 2 and Layer 3 connectivity across a Layer 3 underlay, which was established in the previous section.

With the underlay data model defined, the next peer group to define is the overlay peer group:

Update host_vars and add overlay peers for leafs only (e.g., srl-01 and srl-03), because these are the ones the end devices are connected to. For this implementation of a fabric, no route-reflector is used; therefore, no overlay BGP peers are configured:
```
root@cookbook-lab:~/cookbook-lab/chapters/ch06# vi host_vars/srl-02.yml
bgp:
  asn: 65101
  peer_groups:
underlay:
... omitted output ...
```