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

Abstract

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