Abstract: A mobile ad hoc network is multi-hop wireless network with dynamically and frequently changing topology. The power, energy and bandwidth constraints of these self organized systems have made routing a challenging problem. No of routing protocols has been developed to find routes with minimum control overhead and network resources. Ex-tensions are done on conventional protocols to improve the throughput. The simulation has shown that there is certainly a need for a special protocol in constrained situation. This paper gives the overview on comparison of AODV and DSR on demand routing protocols in constrained situation and shows that AODV out performs DSR in constrained situation.
Keywords: DSR, AODV, CAODV, CDSR, GLOMOSIM Simulator.