Performance Evaluation of Multi Hop Routing Using Software Defined Network

The existing path labeling technique does not follow any multipath methodology. In case of any busy event, the sender node must wait before forwarding data to destination node. This results in higher delay and lesser bandwidth throughput. To overcome this problem, an optimal routing based on certain network parameters is proposed to compute cost for every routing cycle. This method also adopts multi path in case of any congestion or burst network, which avoid network performance to degrade. Software Defined Networks are intelligent networks where the routing decisions are not based on some traditional algorithms. In this paper, various scenarios are designed using different network topologies and devices. The cost factor is computed every time while routing the data from source to destination. The routing is not based upon traditional approaches like shortest path, Dijkstra's routing algorithms. The goal of routing is to achieve the minimum cost routing. Various topologies like spanning tree, ring tree and dual tree are evaluated on the basis of factors like bandwidth usage, cost and link efficiency. OPNET simulator version 14.5 is used for this work.