The Research About P2P Flow Optimization Based On IP Network

P2P network architecture broke traditional Client/Server (are/Server, C/S) mode, high transmission efficiency, so to get more extensive application. But the high speed development of in the meantime also brings a lot of problems, such as current main P2P node selection algorithm ignored existing IP network architecture, make P2P traffic694exports in the existing Internet bandwidth resources, to greatly network operator brings a lot of pressure, also brought to the user experience greatly.According to the characteristics and P2P network development needs, this paper puts forward a kind of mixed mechanism of P2P traffic optimization mechanism-NNS algorithm, namely the mechanism for the main ideas of P2P overlap by online identification and bottom IP networks nets yuan address mapping up, in the same field preferred option bottom nearest point on the meaning, through the local network node to maximize efficiency, thus achieved reduce backbone layer repeat flow.The mainly research work of this paper in the following aspects:(1) For the current mainstream of P2P networks structure for comparison and analysis, this paper established in the working mechanism of P2P research that the ISP and P2P collaborative approach, and the relevant mathematical model set up;(2) Based on existing mainstream IP network protocol, introduced the concept of network cost value, and puts forward the theory of network node maximize the use basis and mathematical analysis and calculation, and use this as important parameters to measure network node P2P perception;(3)Put forward the node selection algorithm for P2P. That is the business of the distinguish between types of P2P respectively.The node chooses different definition standard, through the related mathematical calculation to get nets yuan between the communication overhead value, and with each node itself to quantify the load node own service capability, a priority in the same field service ability strong, relative distance is nearly node so as to avoid the IP network flow and the repeat cross-realm flow, saving the bandwidth of the network.In this paper the experimental environment DDP system under the performance of this algorithm simulation, the simulation results prove popular with current year-on-year DHT, CDN algorithm, this algorithm in network node preferential selection, improve the network node bandwidth utilization, improve the network node service ability, reduce net cross-realm flow four aspects have been significantly improved, already can effectively reduce the cross nets flow, P2P and can reduce the pressure, and operators of P2P users distinguish optimization experience.