Book Image

Practical Network Automation

By : Abhishek Ratan
Book Image

Practical Network Automation

By: Abhishek Ratan

Overview of this book

Network automation is the use of IT controls to supervise and carry out every-day network management functions. It plays a key role in network virtualization technologies and network functions. The book starts by providing an introduction to network automation, SDN, and its applications, which include integrating DevOps tools to automate the network efficiently. It then guides you through different network automation tasks and covers various data digging and reporting methodologies such as IPv6 migration, DC relocations, and interface parsing, all the while retaining security and improving data center robustness. The book then moves on to the use of Python and the management of SSH keys for machine-to-machine (M2M) communication, all followed by practical use cases. The book also covers the importance of Ansible for network automation including best practices in automation, ways to test automated networks using different tools, and other important techniques. By the end of the book, you will be well acquainted with the various aspects of network automation.
Table of Contents (14 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Site rollouts


As we continue to work with multi-vendor environments, there is a demand to quickly roll out devices and configs to get a particular site up and running. Multiple techniques can be deployed for site rollouts, which involves a standard set of devices connected to standard ports with a standard IOS or code image on each device ready to be racked and powered up.  To determine the standard Stock Keeping Unit (SKU) for a specific site, we can segregate it as t-shirt sizes. At the planning stage we can create t-shirt sizes based upon certain parameters, such as usage, load, and redundancy.

At the lowest level, let's say extra small size (XS) can have a single router and a single switch with the router terminating at an internet link. The switch is connected to the FastEthernet 0/1 (for 100 Mbps) or Gi0/1(for 1000 Mbps) port on the router, and end users directly plug in to the switch to get access. Based upon this XS SKU (or t-shirt size), we can determine the hardware vendor, such...