Book Image

Network Automation with Go

By : Nicolas Leiva, Michael Kashin
Book Image

Network Automation with Go

By: Nicolas Leiva, Michael Kashin

Overview of this book

Go’s built-in first-class concurrency mechanisms make it an ideal choice for long-lived low-bandwidth I/O operations, which are typical requirements of network automation and network operations applications. This book provides a quick overview of Go and hands-on examples within it to help you become proficient with Go for network automation. It’s a practical guide that will teach you how to automate common network operations and build systems using Go. The first part takes you through a general overview, use cases, strengths, and inherent weaknesses of Go to prepare you for a deeper dive into network automation, which is heavily reliant on understanding this programming language. You’ll explore the common network automation areas and challenges, what language features you can use in each of those areas, and the common software tools and packages. To help deepen your understanding, you’ll also work through real-world network automation problems and apply hands-on solutions to them. By the end of this book, you’ll be well-versed with Go and have a solid grasp on network automation.
Table of Contents (18 chapters)
1
Part 1: The Go Programming Language
6
Part 2: Common Tools and Frameworks
10
Part 3: Interacting with APIs

Networking (TCP/IP) with Go

Every network engineer has at some point learned about the seven layers of the Open Systems Interconnection (OSI) model. A more concise version of it, with only four layers, is the TCP/IP model, which is the architectural model that governs communications over the internet.

Each layer defines a function, which one data communication protocol per layer performs. These layers pile one upon another, so we often call this collection of protocols a protocol stack. A data packet has to go through each of the four layers of the protocol stack before it gets to the destination host.

Go has several packages to work with protocols at each layer of the TCP/IP model. This enables us to build solutions for an array of use cases – from IP address management to running application transactions through the network or even implementing network protocols:

Figure 4.1 – TCP/IP model

Figure 4.1 – TCP/IP model

In this chapter, we focus on use cases for...