PERFORMANCE COMPARISION OF TWO ON DEMAND ROUTING PROTOCOL AODV AND DSR in MANET

A mobile Ad hoc Network (MANET) is a collection of wireless mobile nodes forming a temporary network without using any existing infrastructure i.e. nodes are connected through a wireless medium forming rapidly changing topologies and nodes are free to move about and organize themselves in to a network. These nodes change positions frequently. The main classes of routing protocols are Proactive, Reactive and Hybrid. A Reactive (On Demand) routing strategy is a popular routing category for wireless Ad hoc routing. It is a relatively new routing philosophy that provides a scalable solution to relative large network topologies. Routing protocols are analyzed against several performance matrices: Average throughput, Normalized routing load (NRL), Packet delivery fraction (PDF), Average end to end delay by varying Pause time, Number of nodes. The simulation result shows that throughput of AODV protocol is better than DSR protocol as the nodes are increasing/adding to network. Packet drop rate and end to end delay of AODV protocol is less than DSR protocol as the nodes are increasing. Efficiency achieved by the AODV protocol in mobile Ad hoc networks. The simulation is done in network simulator (NS) 2. In this paper the performance differentials are analyzed using varying simulation time, Pause time and Number of nodes. These simulations are carried out using the ns-2 network simulator. The results presented in this work illustrate the importance in carefully evaluating and implementing routing protocols in an ad hoc environment.