Mobile Ad hoc NETwork (MANET) is an autonomous system of mobile nodes connected by wireless links. Each node operates not only as an end system, but also as a router to forward packets. The nodes are free to move about and organize themselves into a network. These nodes change position frequently. The main classes of routing protocols are proactive, reactive and hybrid. A reactive (on-demand) routing strategy is a popular routing category for wireless Ad hoc routing. In this paper, an attempt has been made to compare the performance of two prominent on-demand reactive routing protocols for MANETs: Ad-hoc On-demand Distance Vector (AODV), Dynamic Source Routing (DSR) protocols.