Manet is a decentralized infrastructureless network in which user can communicate with each and every node within it's radio range. Each node in MANET acts as router as well as host. There have been many routing protocols proposed but the major drawback of these protocols is node mobility, time consumption, resource consumption and high bandwidth constraint. This paper introduces enhanced BRM [blackhole resisting mechanism] concept in which each node is responsible for monitoring the behaviour of its neighbour nodes to detect malicious node and to exclude them. And also introduces a concept of modified Self Protocol Trustiness[SPT], in which it will send a fake RREQ at random interval of time to detect if any misbehave. With the help of Dynamic Source Routing[DSR]protocol the optimal path will be identified between any original source and destination which is free from identified malicious nodes. In the existing BRM, the packets are flooded throughout the network inorder to identify the neighbour nodes this results in traffic congestion. The proposed enhanced BRM overcomes the drawback of the existing BRM by introducing node classification mechanism.
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