Ad Hoc network is a infrastructureless network which are mainly used for various types of wireless communication. This network is broadly categorized in to two types mobile ad hoc networks (MANET) vehicular ad hoc network (VANET) utilizes vehicles as mobile nodes in a MANET to constitute a mobile network. Many routing protocols for MANET have designed. The main protocols involved Ad-hoc On-demand Distance Vector (AODV), Destination-Sequenced Distance-Vector (DSDV) routing protocol and Link State Geographical Routing Protocol (LSGR). The performance of each protocol has been evaluated in terms of throughput, the normalized routing load, packet delivery ratio, delay etc. A network simulator-2.35 (NS-2) has been utilized for performance assessment of LSGR, AODV and DSDV. By considering the performance of each protocol it has been observed that LSGR protocol perform better than the DSDV and AODV protocol in ad hoc networks.