Research on Model of Five-level Scheduling Based on SDN

Ahstract- With the rapid development of network equipment, single-port capacity becomes larger. The traditional Quality of Service applications based on single level queue and single level port become the bottleneck of the development of Software Defined Network switching equipment. Therefore, a five-level queue scheduling model based on Software Defined Network is proposed. Through five-level pipeline scheduling, this model can reduce the number of queue which every level scheduler maintenance. By choosing the appropriate scheduling algorithm and flow control algorithm, the multiple users, various flows and different types of network traffic can be uniformly managed and hierarchically scheduled. The simulation result shows that the five-level queue scheduling model reduces the weighted packet loss rate on the premise of guaranteeing the output bandwidth. It can support multiple types of traffic scheduling and flow control, and can ensure the Quality of Service of different business to some extent.