Cluster Based on Demand Routing Protocol for Mobile Ad Hoc Network

Mobile adhoc network (MANET) is a collection of wireless nodes that dynamically create a wireless network among them without using any infrastructure. Nodes are free to move, independent of each other which makes routing much difficult. The routing protocols in MANET should be more dynamic so that they quickly respond to topological changes. Mobile ad hoc network is a collection of mobile nodes communicating through wireless channels without any existing network infrastructure or centralized administration. Due of the limited transmission range of wireless network, multiple "hops" are needed to exchange data across the network. In order to facilitate communication within the network, a routing protocol is used to discover routes between nodes. The primary goal of such an adhoc network routing protocol is efficient route establishment between a pair of nodes so that messages may be delivered in a timely manner. Route construction should be done with a minimum of overhead and bandwidth consumption. This paper mainly focuses on cluster-based routing on demand protocol. In this we use clustering's structure for routing protocol. Clustering is a process that divides the network into interconnected substructures, called clusters. ODRP creates routes on demand so they suffer from a route acquisition delay, although it helps reduce network traffic in general.