一种基于SDN环境的负载均衡调度策略

Multi-equivalent path scheduling algorithm (ECMP) is widely used in data center and other environments, and the traditional ECMP scheduling algorithm can not solve the problem of large flow conflict. Therefore, the improved ECMP algorithm will achieve higher scheduling efficiency by identifying the large flow and reallocating the large flow.The scheme uses the hard_timeout field in the openflow protocol to realize the zero network according to the linear relationship between the large flow and the existence time Consumption of the identification of the flow. And use SDN's global view to re-schedule the associated flow to improve network utilization. Through the shaping plan to solve the switch to select the problem, in order to reduce the flow of polling. While the use of MPLS way to reduce the consumption of flow items. The results show that the algorithm can effectively improve the flow completion time.