Book Image

Software-Defined Networking with OpenFlow - Second Edition

By : SIAMAK AZODOLMOLKY, Oswald Coker
Book Image

Software-Defined Networking with OpenFlow - Second Edition

By: SIAMAK AZODOLMOLKY, Oswald Coker

Overview of this book

OpenFlow paves the way for an open, centrally programmable structure, thereby accelerating the effectiveness of Software-Defined Networking. Software-Defined Networking with OpenFlow, Second Edition takes you through the product cycle and gives you an in-depth description of the components and options that are available at each stage. The aim of this book is to help you implement OpenFlow concepts and improve Software-Defined Networking on your projects. You will begin by learning about building blocks and OpenFlow messages such as controller-to-switch and symmetric and asynchronous messages. Next, this book will take you through OpenFlow controllers and their existing implementations followed by network application development. Key topics include the basic environment setup, the Neutron and Floodlight OpenFlow controller, XORPlus OF13SoftSwitch, enterprise and affordable switches such as the Zodiac FX and HP2920. By the end of this book, you will be able to implement OpenFlow concepts and improve Software-Defined Networking in your projects.
Table of Contents (17 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
Free Chapter
1
Software-Defined Networks

FlowVisor slicing


In this section, you will learn how to slice your OpenFlow network, construct logical networks over a physical infrastructure, and have each slice controlled by an OpenFlow controller. You will also learn during this process the concept of flowspaces and how the centralized control feature of OpenFlow provides flexible network slicing. The network topology for this exercise is shown in the following diagram, which includes four OpenFlow switches and four hosts.

Switches s1 and s4 are connected to each other through s2 via a low-bandwidth connection (that is, 1 Mbps and defined as LBW_path in the following custom topology script) and are also connected to each other via s3 through a high-bandwidth (that is, 10 Mbps, defined as HBW_path in the custom script) set of links:

Network topology

This network topology can be constructed using the following Mininet script (assuming that the flowvisor_topo.py file is available in the current directory). Mininet installation was presented...