Improving the Performance of MANET Routing Protocols using Cross-Layer Feedback

− We suggest a simple cross-layer feedback mechanism from the M edium Access Control (M AC) layer to the Address Resolution Protocol (ARP) module which can improve the per formance of Mobile Ad hoc Network (M ANET) routing protocols. I t involves allowing the M AC layer of a mobile node to learn of the IP to M AC address mapping of nodes from broadcast packets that it receives. We show that allowing the M AC layer to create ARP table entr ies leads to dramatic improvements in route acquisition times using the AODV routing protocol. Our simulations are done using NS-2.

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