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Routing is a crucial issue in MANET due to the absence of fixed infrastructure and centralized administration. Many routing protocols like Ad-hoc On-demand Distance Vector (AODV), Dynamic Source Routing (DSR), and Destination Sequenced Distance Vector (DSDV) have been proposed to find the optimized path from source node to destination nodes. This paper analyzed the performance of AODV, DSR and DSDV on the basis of sent packets, received packets and Quality of Service (QoS) metrics like throughput, end to end delay, packet delivery ratio, packet loss ratio with varying network load and network size.