Traffic-Aware Consistent Flow Migration in SDN

In this paper, we present a traffic-aware consistent approach for flow migration in Software Defined Networking (SDN). The proposed scheme considers heterogeneous traffic to determine a consistent flow migration schedule. In a large-scale network, majority of traffic flows are latency sensitive. These flows change path frequently to accommodate new traffic flows. The challenge is to reduce the time required to modify the flow-path of latency sensitive flows. Existing solutions do not consider specific flow characteristics to decide a consistent traffic flow migration schedule. In this work, we propose a coalition graph game-based strategy while prioritizing traffic flows based on latency sensitivity. The proposed scheme significantly reduces the migration duration of latency sensitive traffic flows. In particular, the average traffic flow migration duration is 15.43% less than existing timed two-phase update solution.