Practical Network Automation Leverage the power of Python and Ansible to optimize your network 1st Edition Abhishek Ratan 1788299132 9781788299138

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Product details:

• ISBN 10: 1788299132
• ISBN 13: 9781788299138
• Author: Abhishek Ratan

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.

Table of contents:

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Downloading the color images of this book

Errata

Piracy

Questions

Fundamental Concepts

Network automation

DevOps

Software-defined networking

OpenFlow

Program concepts

Variables

Data types

Decision makers

Loops

Arrays

Functions

Best practices

Readability of a program

Support information

Indentation

Sample best practice example

Language choices (Python/PowerShell)

Writing your first program

PowerShell IDE

Python IDE

Representational State Transfer (REST) framework

Summary

Python for Network Engineers

Python interpreter and data types

Conditions and loops

Nested and multiple conditions

Loops

For next loop

While loop

Writing Python scripts

Functions

Passing arguments from the command line

Python modules and packages

Multithreading for parallel processing

Using Netmiko for SSH and network device interaction

Network automation use case

Summary

Accessing and Mining Data from Network

Device configurations

Multi-vendor environments

IP configs/interface parsing

Device OS upgrades

IPv4 to IPv6 conversion

Site rollouts

Office/DC relocations

Bring Your Own Device (BYOD) configs for switches

Summary

Web Framework for Automation Triggers

Why create web-based scripts/frameworks?

Understanding and configuring IIS for web framework

Understanding IIS

Configuring IIS for Python script support

Creating web-specific scripts

Accessing a script from dynamic HTML

Creating the backend API in C#

Consuming the API in Python

Sample summary task

Summary

Ansible for Network Automation

Ansible overview and terminology

Basic requirements of Ansible

Installation of Ansible

Introduction to ad hoc commands

Ansible playbooks

Working with Ansible facts

Ansible conditions

Ansible loops

Python API with Ansible

Creating network configuration templates

Summary

Continuous Integration for Network Engineers

Interaction with Splunk

Automation examples on various technology domains

BGP and routing table

Configuring Cisco switchport for access point

Configuring Cisco switchport for IP Phone

Wireless LAN (WLAN)

Access of IP Address Management (IPAM)

Example and use case

Create a web-based pre and post check tool for validations

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