On data plane latency and pseudo-TCP congestion in Software-Defined Networking

This paper dissects the source of forwarding latency on the data plane in proactive SDN, and reveals that TCAM insertions with increasing priority can lead to incredibly large forwarding delay. As far as we know, this is the first work that identifies the pseudo-TCP congestion problem caused by long data plane latency. Preliminary experimental results on forwarding delay and TCP performance are presented.