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-------------------------------------------------------------------ABSTRACT--------------------------------------------------------------Mobile Ad Hoc Network (MANET) is an autonomous mobile nodes forming network in an infrastructure less environment and has dynamic topology. MANET reactive protocols always not have low control overhead. The control overhead for reactive protocols is more sensitive to the traffic load, in terms of the number of traffic rows, and mobility, in terms of link connectivity change rates, than other protocols. Therefore, reactive protocols may only be suitable for MANETs with small number of traffic loads and small link connectivity change rates. It is already proved that, it is more feasible to maintain full network topology in a MANET with low control overhead. In this Research Paper through simulations that were carried out by using Network Simulator-2 (NS-2) we had analyze Reactive/On-demand protocols such as Ad Hoc On-Demand Distance Vector Routing (AODV), Temporally-Ordered Routing Algorithm (TORA), and Dynamic Source Routing (DSR).