SDN Switch Traffic Scheduling Method for Polymorphic Network
Polymorphic network needs to recognize and parse various new modality traffic to achieve stream-oriented customized schedu-ling.The packet scheduling capability of SDN switches determines the load distribution of the entire system,which plays a crucial role in system performance.In general,the packet distribution to different CPU cores is carried out by the diversion strategy provided by the network card,but the problem is that the diversion strategy of NIC is only suitable for supported packet types and cannot meet the par-sing requirements of various new modality traffic.To address the above issues,this paper proposes a traffic distribution scheduling method for multi-core SDN switches that supports pre-classification and the loading of adaptive diversion strategies.By using protocol-agnostic pre-classification to determine the pipeline set to which the modality belongs,it also supports loading adaptive diversion strate-gies for different modalities,evenly scheduling modality traffic to the corresponding pipeline.The experiment implemented the proposed scheduling method in a DPDK-based POF switch,and the results show that compared with the original POF switch,the new method has improved the system throughput performance by about 1.54 times when dealing with multimodal traffic and has effectively reduced la-tency.
万方数据
维普
