Significance of scalability for on-demand routing protocols in MANETs

On-demand routing protocols are the most commonly used protocols for the MANETs. It is the dynamic protocol and suitable for many applications. Wireless mobile adhoc networks have gained a lot of significance in wireless communications. The data transmission between the nodes in the wireless communication was established by adopting the routing protocol. The node in mobile ad-hoc networks acts as routers as well as hosts in relaying packets from one node to another. The mobility of the nodes in the network makes the routing as a highly complex activity. To address the challenges of the routing issues and to overcome the problems several routing protocols are developed. Routing is the process of relaying information content from source to destination in the internetwork. For efficiently routing the data packets the network should have, at least, one intermediate neighbor node within the network. The routing of data packets in the network involves two activities: firstly, optimal routing path determination and secondly, relaying the data packets through an internetwork. In this paper, it is intensely discussed the different types on-demand routing protocols used for mobile ad hoc networks.