Ad hoc network is a collection of mobile nodes which dynamically form a temporary network without any infrastructure or centralize entity. There are number of routing protocol exists in ad hoc network and this protocols have been compared. These protocols are like DSR (Dynamic Source Routing), AODV (Ad-hoc On-demand Distance Vector routing algorithm) and TORA (Temporally Ordered Routing Algorithm) like more. AODV is Reactive routing protocol. The authors modify the existing AODV protocol. All routing protocol have different strategies of routing like end to end delay, packet delivery ratio, traffic overhead and power consumptions.