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There are two groups of routing protocols. Proactive MANET protocol, Reactive MANET Protocol, and the third are derived from both called Hybrid MANET Protocol. The Proactive MANET protocol is generally called table driven protocol. It detects the network layout periodically. It tries to maintain the routing table at every node. From which a route to the destination from the source can be detected with less delay. Proactive MANET protocols provide good reliability and low latency for deciding a route. Proactive MANET protocol is not suitable for the node moving with high speed. The routing information in the routing table cannot be updated in the routing table. If a node is not moving, then its routing table information is updated continuously. It makes much traffic overhead and also waste network resources as bandwidth [21]. Proactive MANET protocol is also not suitable for large scale MANETs. Whereas Reactive MANET Protocol is called on-demand routing protocol. Reactive MANET Protocol finds the route when a source node requests to communicate with the other. On-demand approach is suitable for the nodes with high mobility. Nodes that transmit data rarely. The main drawback of reactive routing protocols is that the source node broadcasts the routing requests in the whole network. Then it waits for the responses. This route discovery procedure produces significant delay


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