Performance evaluation of chord in mobile ad hoc networks
Curt Cramer, Thomas T. Fuhrmann · 2006
Mobile peer-to-peer applications recently have received grow-ing interest. However, it is often assumed that structured peer-to-peer overlays cannot efficiently operate in mobile ad hoc networks (MANETs). The prevailing opinion is that this is due to the protocols ’ high overhead cost. In this paper, we show that this opinion is misguided. We present a thorough simulation study evaluating Chord in the well-known MANET simulator GloMoSim. We found the main issue of deploying Chord in a MANET not to be its overhead, but rather the protocol’s pessimistic timeout and failover strategy. This strategy enables fast lookup res-olution in spite of highly dynamic node membership, which is a significant problem in the Internet context. However, with the inherently higher packet loss rate in a MANET, this failover strategy results in lookups being inconsistently forwarded even if node membership does not change.