Tag:   Software Defined Networking (SDN)

In my previous article I presented various encapsulation techniques used to extend Layer 2 reachability across separate networks using tunnels created with Open vSwitch. Although the initial intention was to include some iperf test results, I decided to leave these for a separate post (this one!) because I hit few problems.

Building overlay networks using tunnels was always done to achieve connectivity between isolated networks that needed to share the same policies, VLANs or security domains. In particular, they represent a strong use-case in the data center, where tunnels are created between the hypervisors in different locations allowing virtual machines to be provisioned independently from the physical network.

Over the next few articles, I will write about OpenFlow, Open vSwitch and other SDN related topics. As always, I'm combining the theory part with some hands-on practice and for this, I put this article together describing one way of building such a testing environment.

Welcome to a new series of articles that will be structured as lessons with the target of bringing SDN closer to everyone's understanding. Each article will present a topic plus one or more exercises that will show that topic in action. The lessons will wrap up with some questions asking the readers to exercise on their own and provide the answers.