关键词: 对等网, Chord, 路由, 组播, 分布式哈希表

Abstract: Chord is a successful routing algorithm, but the inconsistence between logistic routing and physical routing leads to very big network delay if the node routing only rely on logistic distance and this will seriously effect the routing efficiency. A Chord routing algorithm based on limited network layer multicasting is proposed, which uses multicast technology to obtain physical neighbor nodes and improves on Chord original routing algorithm. It can shorten network search delay greatly, reduce routing hops effectively and improve the performance of routing.

Key words: Peer-to-Peer, Chord, routing, multicast, Distributed Hash Tables （DHT）