MANET is a self-organized and self-configurable network, where the mobile nodes move arbitrarily. The mobile nodes could receive and forward packets as a router or gateway. This paper is analysis the performance of the protocols like AODV, DSR and OLSR protocols. We compared three routing protocols i.e. AODV, DSR and OLSR. Our simulation tool will be OPNET modeler. The performance of these routing protocols is analyzed by three metrics: delay, network load and throughput. All the three routing protocols are explained in a deep way with metrics and OLSR protocol is among the best out of said protocols. The OLSR protocol is a variation version of the traditional link state protocol. An important aspect of OLSR is the introduction of multipoint relays (MPRs) to reduce the flooding of messages carrying the complete link-state information of the node and the size of link-state updates.
AODV, DSR, OLSR, Delay, Throughput.