EFFECT ON AODV ROUTING PROTOCOL UNDER BLACKHOLE ATTACK IN VANET

Vehicular Ad-hoc Networks (VANETs) is an advancement over Mobile Ad Hoc Networks (MANETs) which is mainly design for inter vehicle communication. VANET is a scalable and unbounded network which is completely independent from the number of nodes. It can be implemented for one or several cities even for whole country. VANET is a self organizing network emergent technology with a promising advantages but having high challenges in its security. VANET communication must be secure and having guarantee that transmitted message is not inserted or modified by any attackers. VANETs is having different security requirement for governing proper vehicular communication. For secure VANET communication first systems have to discover who are the attackers, their capacity and nature to spoil the network communication. In this paper we have done the analysis of different Routing protocols OLSR, DSDV, AODV and DSR in VANET. We selected AODV as a most vulnerable protocol in VANET and presented effect of Blackhole Attack using AODV Protocol with the detail comparative analysis of Packet Drop Rate, Throughput and End to End Delay Parameters.