Research On P2P Traffic Identification And Control Based On IPv6

The nearly limitless address space of IPv6 has provided basal condition and wide opportunity of development for the application of P2P technology.But P2P traffic also has had a large impact on internet when it brings huge advantage for numerous users.P2P traffic not only has badly consumed network bandwidth,even caused network congestion,accordingly reduced network performance greatly and deteriorated network quality of service,which has had an extremely serious influence to network traffic.Therefore,on the basis of IPv6,the comprehensive and effective identification and control to P2P traffic not only can guarantee normal operation of essential network service,but also can reduce network bandwidth,which can solve broadband operators' confusion brought by current P2P.This subject developed research work in view of P2P traffic characteristic in current internet.First,the paper conducted research from such aspects as the definition of P2P,the comparison of P2P pattern and C/S pattern,four types of P2P network topology model,key technologies of P2P application and the support to P2P technology by IPv6.It analyzed the principle of operationa and transport characteristics of five big mainstream P2P protocols,specially studied several types of commonly-used P2P protocol identification methods.Next,the paper designed a P2P traffic identification model which combines the identification based on the connection pattern of transport layer with the one based on deep packet inspection.Second,the paper studied correlative control technology and algorithm used by current network traffic,through the comparative analysis chose DWRR algorithm and token bucket algorithm to implement queue scheduling module and traffic shaping module.At the same time,a network traffic control strategy was analysed and given.At last,in the foundation of the strategy,a P2P traffic control model basing on IPv6 was designed.The IPv6 header supporting P2P identification was redesigned,and the traffic control module of the model was realized.The traffic identification and control model designed by this paper can carry on the effective identification and control to P2P network traffic,so as to perform the reasonable network service planning and traffic management,which provides value and value-added services for operators.This model provides certain reference value and applied significance to P2P application and research in next generation internet based on IPv6.