和先前的系统管理员一样，网络工程师也发现他们再也无法靠手动完成工作了。随着该领域中出现了新的协议、技术、交付模式以及企业力求更加敏捷和灵活的迫切需求，网络自动化正变得至关重要。这本实用指南向网络工程师展示了如何利用各种技术和工具(包括Linux、Python、JSON和XML)，通过代码实现系统自动化。
詹森·埃德尔曼斯科特·S.洛、马特·奥斯瓦尔特著的《网络编程与自动化(影印版)(英文版)》将帮助你简化与配置、管理、网络设备操作、拓扑、服务以及连通性相关的任务。在本书的学习过程中，你将学习到完成这种关键转换所需的基本技能和工具。

Preface
1．NetworkIndustryTrends
The Rise of Software Defined Networking
OpenFlow
What Is Software Defined Networking
Summary
2．NetworkAutomation
Whv Network Automation
Simplified Architectures
Deterministic Outcomes
Business Agility
Types of Network Automation
Device Provisioning
Data Collection
Migrations
Configuration Management
Compliance
Reporting
Troubleshooting
Evolving the Management Plane from SNMp to Device APIs
Application Programming Interfaces(APIs)
Impact of Open Networking
Network Automation in the SDN Era
Summary
3．Linux
Examining Linux in a Network Automation Context
A Brief History of Linux
Linux Distributions
Red Hat Enterprise Linux，Fedora，and CentOS
Debian，Ubuntu，and Other Derivatives
Other Linttx Distributions
Interacting with Linux
Navigating the Filesystem
Manipulating Files and Directories
Running Programs
Working with Daemons
Networking in Linux
Working with Interfaces
Routing as an End Host
Routing as a Router
Bridging(Switching)
Summary
4．Learning Pythonin a NetworkContext
Should Network Engineers Learn to Code
Using the Python Interactive Interpreter
Understanding Python Data Types
Learning to Use Strings
Learning to Use Numbers
Learning to Use Booleans
Learning to Use Python Lists
Learning to Use Python Dictionaries
Learning About Python Sets and Tuples
Adding Conditional Logic to Your Code
Understanding Containment
Using Loops in Python
Understanding the while Loop
Understanding the for Loop
Using Python Functions
Working with Files
Readingfrom aFile
Writingto aFile
Creating Python Programs
Creating a Basic PYthon Script
Understanding the Shebang
Migrating Code from the Python Interpreter to a Python Script
Worldng with Python Modules
Passing Arguments into a Python Script
Using pip and Installing Python Packages
Learning Additional Tips，Tricks，and General Information When Using
Python
Summary
5．Data Formats and DataModels
Introduction to Data Formats
Types ofData
YAML
Reviewing YAML Basics
Worldng with YAML in Python
Data Models in YAML
XML
Reviewing XML Basics
Using XML Schema Definition(XSD)for Data Models
Transforming XML with XSLT
Searching XML Using XQuery
TSON
Reviewing JSON Basics
Working with JSON in Python
Using jsON Schema for Data Models
Data Models Using YANG
YANG Overview
Taking a Deeper Dive into YANG
Summary
6．NetworkConfigurationTemplates
The Rise of Modern Template Languages
Using Templates for Wleb Development
Expanding On the Use of Templates
The Value of Templates in Network Automation
Jinja for Network Configuration Templates
whyIinja
Dynamically Inserting Data into a Basic Jinja Template
Rendering a Jinja Template File in Python
Conditionals and Loops
Jinja Filters
Template Inheritance in Jinja
Variable Creation in Iinja
Summary
7．Workingwith NetworkAPIs
Understanding Network APIs
Getting Familiar with HTTP—Based APIs
Diving into NETCONF
Exploring Network APIs
Exploring HTTP—Based APIs
Exploring NETCONF
Automating Using Network APIs
Using the Python requests Library
Using the Python ncclient Librarv
Using netmiko
Summary
8．SourceControlwith Git
Use Cases for Source Control
Benefits of Source Control
Change Tracking
Accountability
Process and W10rknOW
Benefits of Source Control for Networking
EnterGit
Brief History of Git
Git Terminology
Overview of Git's Architecture
Working with Git
Installing Git
Creating a Repository
Adding Files to a Repository
Committing Changes to a Repository
Changing and Committing Tracked Files
Unst