Shashank Awasthi , Dr. A. L. N. Rao, Professor
MANET is a collection of wireless nodes that can dynamically form a network to exchange information without using any pre-existing fixed network infrastructure with or without centralized network controller. MANETs are becoming useful due to the existing wireless infrastructure is costly and not convenient now a days. MANET is becoming important part of next generation mobile services. Due to the frequent changes  in network topology and the lack of the network resources both in the wireless medium and in the mobile nodes, mobile ad hoc networking becomes a challenging task. As a result, routing in such networks experiences link failure more often than infrastructure based network. Hence, a routing protocol that supports ad hoc networks requires considering the reasons for link failure to improve its performance. Link failure results from node mobility and lack of the network resources. Therefore it is essential to analyze the characteristics to identify the quality of links. Furthermore, the routing protocols must be adaptive to cope with the time-varying low-capacity resources. For instance, it is possible that a route that was earlier found to meet certain requirements no  longer does so due to the dynamic nature of the topology. In such a case, it is important that the network intelligently adapts the session to its new and changed conditions. The mobile nodes must co-operate at the routing level in order to forward packets to moderate the behavior in MANET. It is required to build the relationship between the mobile nodes in the MANET and select routes based on the trust. A hybrid routing protocol should be designed in which communication path between sender node and receiver node is made up through strong metrics. In this work an attempt has been made to compare the performance of hybrid routing  protocol and prominent routing protocols such as AODV, DSR and DSDV. The performance differentials are analyzed using varying simulation time
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M.Tech. (CSE) Student, UPTU, Lucknow
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