Load Balancing and Congestion Control in Software Defined Networking using the Extended Johnson Algorithm for Data Centre

Software-Defined Networking (SDN), showcases a paradigm shift from traditional network towards a new era of Internet. Distributed controllers addresses hindrances like availability and scalability which fails to provide a dynamic mechanism for load balancing. Implementation of Dynamic load balancing safe guard the network from sudden traffic congestion which could be created by data spikes or link breakdown. This paper propose different attempts to integrate congestion control(cc) and dynamic load balancing by combining SDN approach along with Johnson Algorithm. The Extended Johnson Algorithm takes into consideration not only edge weights but also node weights with negative cycles. The algorithm produces efficient utilization of network resources, high throughput of all pairs with shortest paths in a sparse weighted, dense and directed graph. Implementation of this proposed algorithms is studied with OMNET emulation tool under the Abilene network topology.