Practical Network Automation: Leverage the power of Python and Ansible to optimi电子书

Title Page

Copyright

Practical Network Automation

Credits

About the Author

About the Reviewer

www.PacktPub.com

Why subscribe?

Customer Feedback

Preface

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

Step 1 – Create the main HTML file

Step 2 – Create the backend Python code

Step 3 – Create web server based files for the tool

Step 4 – Create server based files for pre and post files comparison

Summary

SDN Concepts in Network Automation

Managing cloud platforms

Programmable network devices

Controller-based network fabric

Network automation tools

Summary