| This paper focus on P2P data that exist in IP data networks of ISP for the study subjects. First of all, an in-depth presentation of the basic principles of P2P technology, P2P network is a high scalability of the distributed system structure, refers to the concept of peer-to-peer network, the physical nodes logically have the same status, rather than the ability to deal with, and so on. BitTorrent software to represent the essence of P2P technology is that the Internet will be the focus toward decentralized management model, Content from a single central node into the network edge, which make full use of the Internet in many end-nodes by implication the capacity and potential resources.Based on the deep understanding of the characteristics of P2P, this paper research the current common use of P2P traffic identification, especially the common-port scanning technology, transport layer flow character matching technology, strategies and technologies of the control of the P2P traffic, and related technologies such as character string matching arithmetic, then compare the advantages and shortcomings in all kinds of identification technologies, and show that the identification technology based on two kinds of characters is the best on this stage.In actual ISP networks, P2P Cache system was designed for the two major needs of the current operators for P2P traffic management and ease the pressure on the export of bandwidth。Research and development of system is based on the analysis of P2P protocol mainly, which is based on analysis of the Transport Protocol, as well as dealing with the application layer protocol in-depth analysis on the basis of the achievable. The use of high-performance core processing technology in the application of conversation on the basis of the application layer protocol, an agreement on P2P to conduct a comprehensive identification, analysis, in order to be able to P2P control and audit content to provide more detailed information useful data to improve system performance. This can save output bandwidth of Internet for ISP, and can improve the perception of users in Internet.With the 3G networks getting in use gradually, Mobile P2P becomes the hot point of application which combined the mobile technology and P2P technology. This paper discusses the concept of the mobile internet, the application pattern of P2P technology in mobile internet, major analysis three kinds of the networks structure of mobile internet for P2P application, the relationship between networks structure and P2P application, and the resource search technology for P2P protocal. On this base, we can implement the management of P2P applications in mobile networks in the future. |
