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Mobile Ad Hoc Network (MANET), is an autonomous mobile nodes forming network in an infrastructure less environment and has dynamic topology, also called short lived networks. In order to facilitate communication within the network, a routing protocol is used to discover routes between them. In MANET, temporary link failures and route changes happen frequently. With the assumption that all packet losses are due to congestion, Transport Control Protocol (TCP) performs poorly in such an environment. Many TCP variants have been developed for the improved performance of TCP in MANET. In this paper, through simulations that were carried out by using Network Simulator-2 (NS-2), two selected MANET Reactive Routing protocols i.e. Ad-hoc On-demand Distance-vector (AODV) and Dynamic Source Routing (DSR) Protocol were analyzed in accordance with their finest performance of packets delivery rate, average end-to-end delay, and packet dropping, under TCP Vegas with mobility consideration at different pause time values. The simulation results indicate that AODV has a better throughput performance and low average end to end delay as compared to DSR, but AODV suffers from high packet drop.