Unsplittable flow Edge Load factor Balancing in SDN using P4 Runtime

The spread of services and applications using cloud computing has led to an increase in the amount of network traffic. Therefore, traffic control methods using an SDN architecture for flexibly managing a network have been studied. Previous studies have proposed a traffic load balancing method by a single SDN controller. However, implementation with multiple SDN controllers has been considered to cope with scalability and redundancy. This paper model the distributed network as a flow network and defines the ratio of flow to capacity in an edge as a load factor. Besides, this study proposes a traffic load balancing method considering Unsplittable flow Edge Load factor Balancing problem and implements it to confirm its feasibility in a real network.