Congestion Control in Manet using Efficient Local Route Repair Method

AODV protocol is an on demand reactive protocol, which exhibits congestion during high mobility and multiple data packet stream to a common destination. This may result in decaying the performance of AODV. The proposed modification is aim controlled congestion by applying efficient local route repair method. When the link failure is detected at intermediate node, a help message has broadcasts to neighbor’s nodes. The neighbor’s node that have shortest route to destination, will reply to help. On the reply message, the new route has established and data now can be transmitted through this route. The results show that AODV-ELRR performs better in terms of packet delivery ratio, normalized routing load, end to end delay and packet loss than classic AODV. The simulation is done through network Simulator-2 (ns2). KeywordsAODV, Active Route, Congestion, Local Route Repair, MANET, Ns2,