A Fast Failover Technique for Link Failures and Proactive controller based Fault Recovery Mechanism in Software Defined Networks

In this work, a fast fault tolerant failure methodology is proposed to solve problems including single link and multi-link failure by including pre-established various alternate backup paths for each pair from origin to final destination. In addition, a Reliable fast failover technique for link faults and fault recovery mechanism using proactive controller Software defined Network (FF-FRM-SDN) is implemented by making use of openflow-enabled switches and applying a disjoint path selection methodology producing the best failure recovery mechanism and to achieve the high probability of successful transmission. To conclude, if any fault or failure is detected in SDN, the proposed recovery approach minimizes available packet loss by making use of alternate paths and proactively form flow rules by using flow rules to reduce the failure recovery time. From the simulation results obtained, the proposed FF_FRM_SDN method achieves considerably improved results w.r.t parameters like Packet loss Ratio, End-to-End delay (transmission delay) and Failure recovery time as compared with the other traditional SDN baseline approaches.