P2P业务流量特性及其对Web业务的影响

近年来各种P2P应用不断出现及演进,P2P应用正逐渐成为下一代互联网的杀手级应用。但同时P2P消耗了Internet的大部分带宽,造成了网络技术服务商(ISP)接入网络的拥塞,从而使传统Internet应用性能受到严重影响。从P2P流数量、服务器负载、网络瓶颈点分布、往返时间(RTT)的异构特性等方面可以看出,P2P流量消耗了巨大的网络带宽,影响了传统Internet业务的性能,增加了运营成本。利用P2P流量和Web流量的集成模型,可以量化分析P2P流对Web流的影响,使网络运营商可以在网络瓶颈点对P2P连接数进行优化和调整,从而有效地控制P2P流量。NS2仿真结果较好地验证了该模型的有效性。

The Impact of P2P Traffic Characteristics on Web Traffic

Along with the appearance and evolvement of P2P applications, they also gradually become the most important applications of next generation Internet. However, P2P traffic consumes most of Internet bandwidth and causes congestions that Internet service providers (ISPs) have difficulty accessing the network; thus, severely affecting the performance of traditional Internet applications. From the aspects of traffic flow, server load, network bottleneck, peer distribution, and Round Trip Time (RTT) heterogeneous distribution, P2P traffics expend a lot of network bandwidth, affect the performance of traditional Internet services, and increase operational costs. With an integrated model of P2P traffic and Internet traditional traffic (Web traffic), the impact of P2P traffic on Web traffic is quantitatively analyzed; also, network operators can optimize and adjust the P2P traffic at the bottleneck peer. The simulation results by NS2 demonstrate that the integrated model is very accurate and efficient.