关键词: 对等网, 路由模型, 异构性, Chord, IPv6, 地址聚类性

Abstract: In view of the inconsistence between logical topology and physical topology, and neglect of the heterogeneity of nodes, a new Peer-to-Peer (P2P) routing model based on Chord was proposed. Using address aggregation of IPv6 and hashing node's IP partly, it got hierarchy node's identifier and achieved topological consistency. According to the size of the network, it mapped nodes to multi-layer Chord rings, so that nodes in the same aggregation could domain themselves. Considering the heterogeneity of nodes, well-behaved nodes were assigned more routing tasks. The simulation results show that the proposed model can keep an average routing hops length similar to Chord, but reduce storage cost and search delay.

Key words: Peer-to-Peer (P2P) network, routing model, heterogeneity, Chord, IPv6, address aggregation