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

OpenDayLight's Virtual Tenant Networks


To support and better integrate with OpenStack's tenants, ODL has a specific module named Virtual Tenant Network (VTN).

VTN is one of the very interesting modules in ODL; we haven't discussed this yet. VTN integrates with OpenStack through the ML2 plugin. Technically, VTN is an SDN policy manager. It builds a list of tenants and their resources (virtual machines, networks, IP addresses, MAC addresses, policies, NAT, and so on).

Once we connect ODL and OpenStack using the ML2 plugin, any newly created tenant in OpenStack will be created in ODL's VTN too.

VTN allows users to design a virtual legacy L2/L3 network. Once the network design is finalized in VTN, it will get automatically mapped to the underlying physical network. This mapping is done via the ODL controller by injecting the required configuration to each individual switch or networking equipment, based on the southbound protocol supported by that networking gear.

The following picture from ODL...