Here is an example of an SDN Application using the Big Switch OpenFlow controller to provide flow monitoring of your network. Stace Hipperson from Real Status has linked their HyperGlance 3D visualisation tool to capture flow data and display it in an quite useful way.
Watch the video and consider what this means for troubleshooting a path inside your datacenter.
Then consider linking this visualisation to show a the overlay network and the underlay network at the same time. In normal networks, this process of visualisation is almost impossible.
This is the future I had envisioned when OpenFlow was first explained to me. Think how much more efficient you can be in solving networking problems with these sorts of tools.
A reminder that we are holding a Webinar with demonstration about Big Switch Network and the controller platform where you can learn more about the future of the product.