Book Image

Mastering Python Networking - Third Edition

By : Eric Chou
Book Image

Mastering Python Networking - Third Edition

By: Eric Chou

Overview of this book

Networks in your infrastructure set the foundation for how your application can be deployed, maintained, and serviced. Python is the ideal language for network engineers to explore tools that were previously available to systems engineers and application developers. In Mastering Python Networking, Third edition, you’ll embark on a Python-based journey to transition from traditional network engineers to network developers ready for the next-generation of networks. This new edition is completely revised and updated to work with Python 3. In addition to new chapters on network data analysis with ELK stack (Elasticsearch, Logstash, Kibana, and Beats) and Azure Cloud Networking, it includes updates on using newer libraries such as pyATS and Nornir, as well as Ansible 2.8. Each chapter is updated with the latest libraries with working examples to ensure compatibility and understanding of the concepts. Starting with a basic overview of Python, the book teaches you how it can interact with both legacy and API-enabled network devices. You will learn to leverage high-level Python packages and frameworks to perform network automation tasks, monitoring, management, and enhanced network security followed by Azure and AWS Cloud networking. Finally, you will use Jenkins for continuous integration as well as testing tools to verify your network.
Table of Contents (18 chapters)
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pyATS and Genie

pyATS ( is an open source, end-to-end testing ecosystem originally developed by Cisco and made available to public in late 2017. The pyATS library was formerly known as Genie; many times they will be referred to in the same context. Because of its roots, the framework is very focused on network testing.

pyATS and the pyATS library (also known as Genie) was the winner of the 2018 Cisco Pioneer Award. We should all applaud Cisco for making the framework open source and available to the public. Good job, Cisco DevNet!

The framework is available on PyPI:

(venv) echou@network-dev-2:~$ pip install pyats

To get started, we can take a look at some of the example scripts on the GitHub repository, The tests start with creating a testbed file in YAML format. We will create a simple chapter15_pyats_testbed_1.yml testbed file for our iovs-1 device. The file...