Provided by: Ericsson Research
Date Added: May 2012
In a recent effort to push forward the powerful concept of software defined networks, OpenFlow has gained a lot of popularity as a practical approach to split the data and the control planes by standardizing an open interface that allow remote software controllers to dictate the forwarding behavior of network devices. The latest flexible version 1.1 of OpenFlow is limited to software forwarding plane implementations. In order to deliver high performance, the authors implement an OpenFlow v1.1 hardware forwarding plane based on network processors. Delivering the optimal performance requires finding the optimal mapping of OpenFlow tasks to hardware resources which is already known as an NP-hard combinatorial problem.