Research Of Hierarchical P2P Network Based On Chord

P2P (Peer-to-Peer) technology, as one of the important Internet technologies, has been more and more attention in computer industry in recent years. P2P technology links the people directly, so that people can communicate via the Internet. P2P networks make communication easier and more efficient, more direct interaction and sharing, the Internet has changed the current large-centric Web site, the Internet backs to the original "non-center" model, and returns the rights to the network users.The research of P2P network model is not only the focus of P2P technology study, but also the difficulty of study. At present, although most of the P2P network application is supported by the P2P mainstream network model, but because its mainstream network model's own limitations of the algorithm is not suitable for some special needs of the P2P network applications, so we need to find a more suitable network model.This dissertation sums up and analyzes the current situation and development trend of mainstream peer-to-peer model, bases on this, structures peer-to-peer model for further expansion, mentions a Chord-level P2P network model ( HPNC-Hierarchical P2P Network based on Chord). HPNC model designed to provide users with more efficient and accurate service functions, such as the release and deletion of information resources, finding customer.This dissertation has a detailed design for HPNC network model, including the hierarchical model of network architecture and algorithms and so on. The dissertation describes the model HPNC routing mechanism, explains the basic routing algorithm and routing maintenance algorithm of super-nodes and ordinary-nodes in detail. Finally, tests the rationality of HPNC model and the efficiency of routing through the simulation testing, basically achieves the purpose of design.