Temporal-based Load Adaptive SDN Controller Failover Mechanism

Recently distributed multiple SDN controller architecture is proposed to improve the scalability of SDN architecture. Unfortunately, the state-of-art SDN controller failover mechanism, i.e., switch leader competition, did not consider the characteristics of data center network and the time cost, resource usage, and load balancing after failure. In this paper, we propose a temporal-based load adaptive SDN controller failover mechanism (TLACF) based on the temporal pattern of traffic. The results demonstrate the proposed TLACF can save up to 46% time cost of failover and 66% memory usage for state backup.