Hierarchical ZRP's performance vs ZRP's performance in MANET

The mobile ad hoc network (MANET) has a dynamic nature that makes the network topology change frequently. As a consequence, routing protocol plays an important role in MANET. Zone Routing Protocol (ZRP) is a typical hybrid routing protocol in MANET. It combines proactive with reactive techniques. It applies a proactive technique in the zone and a reactive technique out of the zone. In this paper we propose a hierarchical routing protocol H-ZRP based on ZRP to avoid redundant or duplicate route requests. We demonstrate the performance of H-ZRP with various performance metrics. We compare the performance of H-ZRP and ZRP in End-to-End Delay, overhead, route discovery time and packet delivery ratio.