Abstract:

 To improve the problem of P2P（Peer-to-Peer） applications that consume large network bandwidth and decrease network untility.We present the idea that separate the resource discovery and resource sharing process from the implementation, and we defines two private protocols P2PIEP(Peert-to-Peert Information Exchchange Protocol) and P2PDEP(Peer-to-Peer Data Exchange Protocol) under IPv6 environment, these two agreements were to serve the process of resource discovery and resource sharing process. P2PIEP use smallworld model, use to find resource information. While, P2PDEP packaged in UDP(User Datagram Protocol) message and has a more smaller protocol header, so as to achieve the purpose of improving network utilization.

Key words: IPv6, peer-to-peer network, proprietary protocol, resource sharing, small-world model