Research on P2P routing model based on clustering and position of nodes

Studying at the existed P2P network,Aiming at the issues of communication latency increasing and network costs raising which caused by mismatch between logical topology and physical topology, combining with the clustering of P2P, the thesis proposes a three-tier P2P network model based on clustering and position of nodes in IPv6. In the model, neighbor nodes in physical topology compose domains, nodes with the same property compose a group in every domain, it chooses nodes with the best capability as the intelligent nodes of groups or as the routing nodes of domains by calculating the capability of nodes, and selects routing and forwards datum according to the property similarity and the resources routing table. Simulation result shows the model can shorten search latency, enhance the efficiency of resource search and recall ratio.