Book Image

Learning OpenStack Networking (Neutron)

By : James Denton
Book Image

Learning OpenStack Networking (Neutron)

By: James Denton

Overview of this book

OpenStack Neutron is an OpenStack component that provides networking as a service for other OpenStack services to architect networks and create virtual machines through its API. This API lets you define network connectivity in order to leverage network capabilities to cloud deployments. Through this practical book, you will build a strong foundational knowledge of Neutron, and will architect and build an OpenStack cloud using advanced networking features. We start with an introduction to OpenStack Neutron and its various components, including virtual switching, routing, FWaaS, VPNaaS, and LBaaS. You’ll also get hands-on by installing OpenStack and Neutron and its components, and use agents and plugins to orchestrate network connectivity and build a virtual switching infrastructure. Moving on, you’ll get to grips with the HA routing capabilities utilizing VRRP and distributed virtual routers in Neutron. You’ll also discover load balancing fundamentals, including the difference between nodes, pools, pool members, and virtual IPs. You’ll discover the purpose of security groups and learn how to apply the security concept to your cloud/tenant/instance. Finally, you' ll configure virtual private networks that will allow you to avoid the use of SNAT and floating IPs when connecting to remote networks.
Table of Contents (21 chapters)
Learning OpenStack Networking (Neutron) Second Edition
About the Author
About the Reviewers

Chapter 4. Building a Virtual Switching Infrastructure

One of the core functions of OpenStack Networking is to provide connectivity to and from instances by programmatically configuring the network infrastructure of the cloud.

In the last chapter, we installed various Neutron services and the ML2 plugin across all nodes in the cloud. In this chapter, you will be introduced to networking concepts and architectures that Neutron relies on to provide connectivity to instances as well as multiple mechanism drivers that extend the functionality of the ML2 network plugin: the LinuxBridge, Open vSwitch, and L2 population drivers. You will be guided through the installation and configuration of the drivers and their respective agents, and we will lay a foundation for the creation of networks and instances in the chapters to come.