Performance analysis of peer-to-peer overlay architectures for Mobile Ad hoc Networks

Mobile adhoc networks (MANETs) are good candidate for peer-to-peer (P2P) overlay architectures. In both, nodes work independently and are distributed in nature. P2P overlays are mostly built over traditional underlying IP network like Internet. There are two flavors of it; unstructured P2P such as Gnutella and structured P2P such as Chord. In this paper, we explain and evaluate Gnutella and Chord for different scenarios in NS-2 while keeping Adhoc On-demand Distance Vector (AODV) as underlying routing protocol. Simulation results show that unstructured P2P architecture achieves high hit rate and produces less updates. We further investigate Gnutella by changing the underlying routing protocol.