Avoidance routing to misbebaving nodes in P2P by using reputation and variance

On the design of peer-to-peer network, the underlying assumption was that each peer trusted each other in forwarding transit messages. However, with the growth of peer-to-peer application, especially in business model, some peen may behave as selfish misbehaving nodes due to conflict of interest or conservation bandwidth. Therefore, peer must be capable of avoiding misbehaving nodes. To achieve this, we propose two mom metria for nodes to consider when forwarding a mesage to next node. Reputation metric and variance of reputation metric are added as additional parameters. Both metria am built with nodes local viewpoint. This allows nodes to mute to fingers (Chord muting table) that are more reliable in order to have better opportunity of successful delivery. We also present simulation result to evaluate the performances of our scheme.