FlowVisor is a special purpose controller that allows multiple researchers to concurrently manage the same OpenFlow-enabled network. If we say a network slice is a collection of physical resources and classes of traffics, then FlowVisor is the logic that manages resource allocation among slices and enforces isolation between them. Thus using FlowVisor, research and production traffic can safely co-exist on the same underlying hardware.
We believe that FlowVisor will be an important component on the path of enabling research in your network.
For more information about FlowVisor or to download the code and try it yourself, please go to: