Traffic multi-granularity processing mechanism for Internet-oriented SDN
Xingwei Wang, Jie Li, Bo Yi, Xiangmin LU, Min Huang · Scientia Sinica Informationis · 2020
As a new network architecture, software defined networking (SDN) separates the control and data forwarding planes and implements programmable control. SDN provides a new way to improve the overall performance of the Internet. Although SDN has global view capacity, it also suffers from performance bottlenecks when handling massive Internet data, i.e., frequent interlayer communication between the control and data forwarding planes of SDN reduces the computational efficiency of the controller, and massive flow table entry data incur very high storage costs on switches. To further improve SDN performance and make it adaptable to the massive traffic processing of the Internet, this paper proposes a traffic multi-granularity processing (MGP) mechanism for Internet-oriented SDN. The proposed MGP applies the SDN architecture to traffic processing of the Internet backbone network and implements a multi-granularity traffic processing mechanism in consideration of routing and scheduling. Simulation results demonstrate that the proposed MGP can reduce the amount of interlayer communication and flow table entries, maintain network load balancing, improve the correctness and effectiveness of route selection, improve SDN performance, and improve the processing capacity of mass data on the Internet.