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引入ISP跳数(IH)来衡量在自治系统(AS:Autonom ous System)拓扑中位于不同位置的AS跳数的开销,并引入了骨干链接开销(CBC)来衡量P2P应用通过的骨干网络数量.借助于IH和CBC两个参数分析了P2P应用对ISPs流量的影响.并且在此基础上设计一个新的机制,命名为ISP-DDHA.在ISP-DDHA中,针对主要参数设计了相应的路由选择算法,用来改进ISPs和P2P系统性能.实验结果表明:在某些P2P流量负载较大的网络场景中,相比[7],ISP-DDHA可以减少约7.4%的DAH开销、12.1%的IH开销和10.4%的CBC开销.
The number of ISP hops (IH) is introduced to measure the overhead of AS hops in different locations in the Autonomous System (AS) topology and introduces the Backbone Link Overhead (CBC) to measure the number of backbone networks that P2P applications pass. With the aid of IH and CBC parameters, the influence of P2P application on ISPs traffic is analyzed, and a new mechanism named ISP-DDHA is designed on this basis. In ISP-DDHA, the corresponding routing is designed for the main parameters Algorithm to improve the performance of ISPs and P2P systems.Experimental results show that ISP-DDHA can reduce DAH overhead by about 7.4% compared with [7] in some network scenarios with large P2P traffic load, and 12.1% IH Overhead and CBC overhead of 10.4%.