Book Image

Learning OpenDaylight

By : Reza Toghraee
Book Image

Learning OpenDaylight

By: Reza Toghraee

Overview of this book

OpenDaylight is an open source, software-defined network controller based on standard protocols. It aims to accelerate the adoption of Software-Defined Networking (SDN) and create a solid foundation for Network Functions Virtualization (NFV). SDN is a vast subject; many network engineers find it difficult to get started with using and operating different SDN platforms. This book will give you a practical bridge from SDN theory to the practical, real-world use of SDN in datacenters and by cloud providers. The book will help you understand the features and use cases for SDN, NFV, and OpenDaylight. NFV uses virtualization concepts and techniques to create virtual classes for node functions. Used together, SDN and NFV can elevate the standards of your network architecture; generic hardware-saving costs and the advanced and abstracted software will give you the freedom to evolve your network in the future without having to invest more in costly equipment. By the end of this book, you will have learned how to design and deploy OpenDaylight networks and integrate them with physical network switches. You will also have mastered basic network programming over the SDN fabric.
Table of Contents (18 chapters)
Title Page
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Customer Feedback
Dedication
Preface

Layer 2 switching in OpenDaylight


In the previous chapter, we learned about basic L2 switching in OpenDaylight. This was our basic topology:

We learned that Layer 2 switching is a feature or module of OpenDaylight and needs to be enabled prior to using it. To enable L2 switching in OpenDaylight, you need to run the following command in the OpenDaylight shell:

feature:install OpenDaylight-l2switch-switch

After installing the L2 switch module, OpenDaylight enables the OpenFlow protocol and starts listening on TCP port 6633, which is the OpenFlow server port:

Every physical or virtual OpenFlow-enabled switch in the SDN domain needs to first register with the OpenFlow controller (OpenDaylight). Our Mininet switches, which are actually OVS switches, will then be registered with OpenDaylight and will pop up in the OpenDaylight topology view instantly.

The registration process is completed via an OpenFlow HELLO packet originating from the OpenFlow switch sent, to the SDN controller. This controller...