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


FWaaS enables users to create and manage firewalls that provide layer 3 and layer 4 filtering at the perimeter of tenant networks connected to Neutron routers. The reference driver uses iptables to implement firewalling within router namespaces. FWaaS is often used as a compliment to security groups as it currently lacks some functionality that security groups provide—most notably, the ability to specify the direction of traffic that should be filtered.

FWaaS saw major improvements in the Kilo release and will continue to improve in releases to come. As of Kilo, FWaaS remains in an experimental status and is not recommended for production use. Be sure to reference the OpenStack Neutron Networking guide found at the following URL for up-to-date changes and examples for topics covered in this chapter and others:

In the next chapter, we will explore another advanced Neutron service known as Virtual Private Network as a Service, or VPNaaS. VPNaaS...