The Impact of Node Misbehavior on the Performance of Routing Protocols in MANET

摘要

MANET is a cooperative wireless network in which mobile nodes are responsible for routing andforwarding packets from and to other nodes. Noncooperation is a challenge that definitely degrades theperformance of MANET. A misbehaving or selfish node may make use of other nodes in the network, butdecline to share its own resources with them. These selfish nodes may severely affect the performance ofrouting protocols in MANET.In this paper, we compare the performance of four routing protocols under security attack of nodemisbehavior in MANET. We investigate AODV and DSR reactive routing protocols and OLSR and GRPproactive routing protocols using Riverbed Modeler simulator. The performance comparison is carried outusing two types of misbehaving nodes. The metrics used are End-to-End delay, Packet Delivery Ratio, Datadropped and the Load. The experimental results show that AODV routing protocol performs better than theother routing protocols with higher packet delivery ratio. Further, OLSR routing protocol outperforms theother routing protocols with minimum End-to-End delay.