Performance evaluation of delay tolerant routing protocol by variation in Buffer Size

Delay tolerant Network (DTN) is new challenging network where end to end delay is more as no end-to-end connectivity. This network is emerged from Mobile Adhoc network. In Internet, data transmission is possible only between those nodes, where TCP/UDP can able to establish connection. This is impossible in DTN where TCP and UDP protocol cant used due no end-to-end connectivity. This makes DTN interesting field for researcher where data transmission takes longer time almost in hours. Like adhoc network, there is no route setup and maintenance phase. The majority of routing schemes that have been proposed earlier are broadly classified as flooding and forwarding strategies. This paper, authors try to evaluate the performance of the most prominent routing protocols designed for Delay Tolerant Networks viz. Direct Delivery, Epidemic, First Contact. These strategies called delay tolerant routing protocols are configured for map based model on day to day movements of all members coming to college by means of any vehicle. Also city traffic is also considered. This scenario is created by considering local map. After study and successful simulations of these protocols, author obtains various results by varying the storage capacity of nodes to store and forward message. With the help of results, the authors proved that the performance of MaxProp routing protocol is outstanding than all other routing protocols under consideration.