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Mobile ad hoc networks (Manets) are gaining a lot of concentration in research in recent times due to their importance in enabling mobile wireless nodes to communicate without any existing wired or predetermined infrastructures. One of the main features of mobile ad hoc network lies in the vibrant topology. As the nodes move within the network, the links between nodes are often formed and broken down. The node flexibility affects not only the source and destination, as in a conventional wireless network, but also the intermediate nodes. This happens on account of the multichip nature of the ad hoc network. Because of this the resulting routes can be extremely volatile, making successful ad hoc routing highly flexible and dependable on these topologies changes occurring due to efficient reaction to it. Structure of the network changes rapidly. This is mainly due to the mobility of nodes. The nodes in the network not only act as hosts but also as routers that route data to or from other nodes in network. In this paper for experimental purpose, Investigators considered 250m×250m terrain area and illustrate the network performance parameter for MANET environment via DSR routing protocol with 5, 10, 20, & 30 nodes.