Trust Based Routing Algorithms for Mobile Ad-hoc Network

Mobile Ad-hoc Networks (MANETs) comprises of a set of nodes connected by wireless links. The network is ad hoc because it does not rely on a preexisting infrastructure, such as routers in wired networks. Routing in MANETs is a challenging task due to dynamic topology and error prone shared environment. Data is sent between nodes in a MANET by hopping through intermediate nodes, which must make decisions about where and how to route the data. MANET faces several problems because of node mobility, network traffic, network size, and the possibility of node faults. The efficiency and behavior of a MANET depends on how well information can be passed around and delivered. In today’s world the security vulnerabilities are increasing day by day. It is really difficult to route the packet with minimum packet loss. In this paper three routing algorithms are presented namely disjoint multipath routing (DMR), Trust based multipath routing (TMR), and message trust based multipath routing (MTMR). All the three routing protocols have their own way in order to establish the trust and transmit packet securely. The performance metric considered are, number of hops, route discovery time and packet loss, The simulation results show that MTMR protocol works much better and provides less number of hops, less route discovery time and less packet loss.