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Ad-hoc networks have been the focus of research interest in wireless networks since 1990. Nodes in an ad-hoc network connect to each other dynamically in an arbitrary manner. The dynamic features of ad-hoc networks demand a new set of routing protocols that are different from the routing schemes used in traditional wired networks. A wide range of routing protocols have been proposed by researchers to overcome the limitations of wired routing protocols. This paper focuses on comparative analysis of two on demand routing protocols: Adhoc on demand distance vector (AODV) and dynamic source routing (DSR) based on packet delivery ratio, normalized routing over head and end to end delay while varying number of sources and pause time.