International Journal of Scientific Research and Modern Education (IJSRME) ISSN (Online): 2455 – 5630 (www.rdmodernresearch.com) Volume I, Issue I, 2016 777 TRUST COMPUTATION METHODS IN MOBILE ADHOC NETWORK USING GLOMOSIM: A REVIEW D. Ranjith*, J. M. Balajee** & C. Kumar*** * Assistant Professor, Department of Computer Application, MAHER (Meenakshi University), Chennai, Tamilnadu ** Research Scholar, SITE, VIT University, Vellore, Tamilnadu *** Assistant Professor, Department of Computer Application, Shanmuga Industries Arts and Science College, Manalurpet, Tiruvannamalai, Tamilnadu Abstract: Mobile Ad hoc Network is a type of Ad hoc network that can change locations and configure itself. Mobile ad hoc network is infrastructure-less network of mobile devices connected without wires. In MANET host moves frequently in any direction, so that the topology of the network also changes frequently. No specific algorithm is used for routing the packets. Packets/data must be routed by intermediate nodes in high level packets to their respective destination. So, each node should forward the packets only to the trusted nodes have been proposed in it so far in MANET. To overcome the problem, a comparative study of two trust computation methods (Dempster-Shafer and Bayesian) in mobile ad hoc network is proposed. This will be done by with the help of simulators GloMoSim. Key Words: Mobile Adhoc Network, Dempster-Shafer, Bayesian, MANET & GloMoSim Introduction: For the past few years there is a the huge development in technology, during those time lot of new programming languages, algorithms, operating systems, routing protocols have been introduced in the market but people are not using all those technologies. Even after getting the huge development in MANET [1] [2]. This project will helps to find the efficient trust computation approach among them. Calculating the trust value for each and every node in the Mobile Ad hoc network using mathematical model is arduous task [3]. In MANET there is no specific topology lies, with that dynamic topology routing of a packet without any loss itself is crucial one. The computational work can be done using MATLAB tool provides an easy way of application prototyping likewise new simulation tool used for optimization. [11]. Problem Definition: In Mobile Ad hoc Network (MANET) one of the major characteristics is dynamic topology. Due to this characteristic there arises a problem in packet forwarding mechanism. MANET is infrastructure-less network, it does not have any hardware component to route the packets to respective destination. In order to forward these packets each and every node should take part in routing mechanism which helps the packet to reach the destination node. Nodes in the MANET won’t forward the packet to the next node, before forwarding a packet it will consider its energy level if it has enough energy to transfer the packet and also for the survival of that particular node then only it will forward the packet to next node else it won’t. Each node has to find the trusted node for transferring the packet. Trusted node will be found only by maintaining the trust table for each and every node in the network. Trust of a node will be known only with trust value. To compute the trust value lot of approaches have been proposed, but none of them are widely used. The respective destination of this packet is stored in Google and also in the Drop boxes respectively [9]. Problem is to identify the better computation approach to calculate trust.