Abstract
Software-Defined Networking(SDN) is a hot topic in the past years. However, SDN has some issues relating to the flow table lookup. Hence, we propose another perspective on improving the OpenFlow switch performance. We employ a cache design on port rather than before the flow table. We analyze the real traffic records from National Tsing Hua University. According to the observation, we build a switch model to simulate and evaluate our idea. Compared with previous works, our per-port cache design has lower average turnaround time, and less power consumption. Besides, the simulation and evaluation results show the trade-off between different cache configuration and point out some future researches.