Peer-to-Peer网络流量矩阵的计算模型  

Peer-to-peer network traffic matrix model

作　　者：叶明江[1] 吴建平[1] 徐恪[1] 

机构地区：[1]清华大学计算机科学与技术系,北京100084

出　　处：《清华大学学报（自然科学版）》2010年第1期63-66,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家"八六三"高技术项目(2008AA01A326);国家"九七三"重点基础研究项目(2009CB32051);国家自然基金委和香港RGC联合研究资助项目(20731160014)

摘　　要：为了更好通过流量工程等方法来优化网络中的对等(P2P)网络流量,提出了一个P2P流量矩阵的计算模型。该模型考虑了P2P网络中节点的连接关系、流量本地化因素以及在不同类型网络的特点,对网络中源节点和目的节点之间的P2P流量进行建模。在实际的P2P数据下的仿真结果表明:模型的误差比已有的简单重力模型和独立连接模型分别低43%和32%左右。该模型可以有效的计算P2P流量矩阵,从而指导网络性能的优化。A model is presented to calculate the peer-to-peer （P2P） traffic matrix in a network for use in traffic engineering to optimize network performance. Many important factors were considered in the model including the peer relationships in the P2P network, the localization of P2P traffic and the traffic between different type of networks. The model was used to estimate the P2P traffic between different source and destination nodes. Tests on real P2P traffic traces show that the model performance has a 43% lower error rate than the simple gravity model and a 32% lower error rate than the independent connection model. The model effectively estimates the P2P traffic matrix to optimize network performance.

关 键 词：计算机网络管理 对等(P2P)网络 流量矩阵 流量管理 流量优化 

分 类 号：TP393.07[自动化与计算机技术—计算机应用技术]