Book Image

Mastering Python Networking

By : Eric Chou
Book Image

Mastering Python Networking

By: Eric Chou

Overview of this book

This book begins with a review of the TCP/ IP protocol suite and a refresher of the core elements of the Python language. Next, you will start using Python and supported libraries to automate network tasks from the current major network vendors. We will look at automating traditional network devices based on the command-line interface, as well as newer devices with API support, with hands-on labs. We will then learn the concepts and practical use cases of the Ansible framework in order to achieve your network goals. We will then move on to using Python for DevOps, starting with using open source tools to test, secure, and analyze your network. Then, we will focus on network monitoring and visualization. We will learn how to retrieve network information using a polling mechanism, ?ow-based monitoring, and visualizing the data programmatically. Next, we will learn how to use the Python framework to build your own customized network web services. In the last module, you will use Python for SDN, where you will use a Python-based controller with OpenFlow in a hands-on lab to learn its concepts and applications. We will compare and contrast OpenFlow, OpenStack, OpenDaylight, and NFV. Finally, you will use everything you’ve learned in the book to construct a migration plan to go from a legacy to a scalable SDN-based network.
Table of Contents (22 chapters)
Humble Bundle
About the Author
About the Reviewer
Customer Feedback
OpenStack, OpenDaylight, and NFV

Preparing the network

Before we dive into the SDN network, we should take a moment to prepare our network. For example, as we have seen with the various examples in the book, network automation works because it offloads redundant, boring tasks with computer programs (Python in our case). A computer can complete the tasks fast and without mistakes, and is superior to its human counterpart. What a computer program does not do well, amongst other things, is analytics and interpretation of situation. Automation is most effective when our network is standardized with similar functions. The same goes for SDN migration. If we have many parts of the network that are dissimilar that requires constant thinking when making modifications, simply placing a controller within the network will not help us much.

The following are what I deem to be necessary steps that should be taken prior to SDN and OpenFlow migration. The points listed next are subjective in nature with no right or wrong answer, but only...