LIU Xia, YANG Guiqin, SHAO Junhua, et al. Dynamic timeout optimization algorithm in SDN[J]. 2019, (10): 118-121. DOI: 10.13873/j.1000-9787(2019)10-0118-04.
Aiming at the problem that at the peak of software defined network(SDN) data
the limited flow entry resources of SDN switches will have a great limitation on network performance
a dynamic timeout time optimization(DTO)algorithm is proposed. The algorithm estimates the number of new flow entry in the network in the next time period by dynamic exponential smoothing(DES)algorithm
at first.And then
dynamically optimize and adjust the stagnation time of the flow entry by dynamic parameters
according to the actual load status in the SDN.The simulation in Mininet shows that the optimization algorithm can effectively improve matching ratio of flow entry
the utilization of flow entry resources and the average network throughput