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 8. Router Redundancy Using VRRP

In the Juno release of OpenStack, the Neutron community introduced two methods of attaining high availability in routing in a reference implementation. This chapter focuses on a method that uses Virtual Routing Redundancy Protocol, also known as VRRP, to implement redundancy between two or more Neutron routers. High availability using distributed virtual routers, otherwise known as DVR, will be discussed in Chapter 9, Distributed Virtual Routers.

In the previous chapter, we explored the concept of standalone routers and how they allow users to route traffic between tenant networks and external networks as well as provide network address translation for instances managed by the user. In this chapter, we will cover the following:

  • High availability of routing using keepalived and VRRP

  • Installing and configuring additional L3 agents

  • Demonstrating the creation and management of a highly available router