Efficient Load Balancing and Multicasting for Uncertain-Source SDN: Real-Time Link-Cost Monitoring

Software-Defined Networking (SDN) is the next generation network architecture with a new approach to design, build and manage computer networks. Multicasting is a way of transmitting the same content to different destinations. In this paper, we propose an efficient load balancing and multicasting scheme for uncertain-source SDN, using current link cost monitoring. We consider the balance of bandwidth utilization, tree building, and the process of uncertain-source selection. We name this scheme RTLMUS (Real-Time Link Monitoring Uncertain-Source). We then ensure that each destination node connect to just one potential source node. Simulation results demonstrate that our algorithm can improve the network bandwidth utilization and successfully select the multicast source node from the set of potential uncertain-sources.