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Performance Comparison of Routing Protocols in MANET


Bharti Kukreja, Sanjeev Kambhra


Vol. 14  No. 8  pp. 108-114


A mobile ad hoc network (MANET) consists of mobile nodes that are capable of communicating with each other in multihop trend without centralized control and fixed based station. As the nodes are mobile, so topology changes frequently that leads to link failure. For finding a route to destination, new route discovery is initiated. Frequent discoveries lead to more routing overhead. To avoid this multipath routing protocols have been proposed as they find multiple routes to destination and switch on to alternate path in case of route failure. In this paper an attempt has been made to compare the performance of two major on demand reactive routing protocols for MANETs that is Ad hoc On Demand Distance Vector (AODV) and Ad-hoc On-demand Multipath Distance Vector Routing (AOMDV). AODV is reactive gateway discovery algorithm where a mobile device of MANET gets connected to gateway only when it is needed. AOMDV was designed generally for highly dynamic ad hoc networks where link fails and route breaks occur frequently. It maintains routes for destinations and makes use of sequence numbers to determine the freshness of routing information to prevent from the routing loops. The performance metrics are analyzed by varying simulation time. These simulations are taken out using the ns-2 network simulator. The results of this work illustrate the importance in carefully evaluating and implementing routing protocols in an ad hoc environment