At the Passive and Active Measurements Conference (PAM) 2015 in New York, Maciej presented our paper on detailed measurements of OpenFlow switch differences and performance characteristics.
The abstract is as follows: SDN deployments rely on switches that come from various vendors and differ in terms of performance and available features. Understanding these differences and performance characteristics is essential for ensuring successful deployments. In this paper we measure, report, and explain the performance characteristics of flow table updates in three hardware OpenFlow switches. Our results can help controller developers to make their programs efficient. Further, we also highlight differences between the OpenFlow specification and its implementations, that if ignored, pose a serious threat to network security and correctness.