Book Image

OpenStack Networking Essentials

By : James Denton, Derek Chamorro
Book Image

OpenStack Networking Essentials

By: James Denton, Derek Chamorro

Overview of this book

The OpenStack Networking API offers users the ability to create and manage both basic and complex network architectures that blend the virtual and physical network infrastructure. This book kicks off by describing various components of Openstack Neutron and installing Ubuntu OpenStack based on Canonical's process. Further on, you will use various methods to interface with Neutron to create and manage network resources. You will also get to grips with the relationship between ports, networks, and subnets through diagrams and explanations, and see how the logical components are implemented via plugins and agents. Moving forward, you will learn how virtual switches are implemented and how to build Neutron routers. You will also configure networks, subnets, and routers to provide connectivity to instances using simple examples. At the end, you will configure and manage security groups, and will observe how these rules translate to iptables rules on the host machines. By the end of the book, you will be able to build basic network architectures using Neutron networks and routers in no time.
Table of Contents (15 chapters)
OpenStack Networking Essentials
Credits
About the Author
www.PacktPub.com
Preface
Index

Summary


In this chapter, we covered the two most popular open source virtual switching platforms for OpenStack, known as Open vSwitch and LinuxBridge. If you're an ordinary user without access to the underlying infrastructure, much of what has been covered and represented in this chapter will not be directly observable by you. For administrators and operators, though, understanding how the virtual switching infrastructure interacts with the physical infrastructure is crucial to understanding, operating, and supporting OpenStack clouds. In the next chapter, we will take a look at how Neutron implements virtual routers that provide routing between Neutron networks. Concepts that will be covered include network namespaces, Source Network Address Translation (SNAT), and floating IPs.