Openflow 1.0

Overview:

This is a simple OpenFlow tutorial that will guide you through the writing of simple OpenFlow controllers to showcase some of the OpenFlow capabilities. We are going to write three different controllers:

• Write a controller that will duplicate all the traffic of the OpenFlow switch out a specific port
• TCP Port Forward controller. Divert all traffic destined to host A on TCP port X to TCP port Y
• Proxy Controller. Write a controller that will divert all traffic destined to host A, TCP port X to host B, TCP port Y

In this tutorial we are using the OpenFlow Software Switch, Open vSwitch (OVS). The general topology is as pictured below. In general, the controller just needs to have a public IP address, so that it can exchange messages with the OpenFlow switch. The controller for the switch can run anywhere in the Internet. For this tutorial we are going to use a POX based controller, which is just one example of many controller frameworks.