Comparison of Normal Selfish Overlay Network and Selfish Overlay Network with Deployment of Overlay Nodes Using Fuzzy Logic

Selfish overlay routing is the technique whereby the sender of the packet can specify the route that the packet should take through the network. Selfish overlay routing allow end users to select routes in an egocentic fashion to optimize their own performance without considering the system wide criteria which in turn cause performance degradation .The main concept behind the selfish overlay network is whenever there is a link failure the overlay nodes in the network will route the packet to their concerned destination.So far the overlay nodes are deployed randomly in the network and it is proved that the overlay nodes are happened to be deployed even in the place where there is no link failure.The demerit of such deployment of overlay nodes is memory consumption in the Selfish Overlay Network.To overcome such demerits overlay nodes are deployed dynamicaly in selfish overlay network using fuzzy logic and the result was compared with the normal selfish overlay network without fuzzy logic.Simulation results shows that selfish overlay network with overlay nodes deployed using fuzzy logic gives better result than the selfish overlay network with random deployment of overlay nodes.