基于仿真的宽带网络流量特征分析  

An Analysis of the Characteristics of High-speed Network Traffic Based on Simulation

作　　者：马维旻[1] 李忠诚[1] 王俊峰[1] 谢高岗[1] 

机构地区：[1]中国科学院计算技术研究所信息网络室,北京100080

出　　处：《系统仿真学报》2004年第4期681-684,710,共5页Journal of System Simulation

基　　金：国家"863"计划基金资助(2002AA121032);国家自然科学基金项目(90104006)。

摘　　要：网络的流量特征对于建网及网络性能分析至关重要。本文基于自相似理论基础,运用计算机仿真技术,对在不同负载情况下,宽带网络流量特征的变化过程进行了研究。实验数据表明,自相似业务流通过汇聚节点进入核心链路之后,其自相似特性仍然保持,但是自相似的程度有所下降,特别是在网络吞吐量较大的情况下,自相似程度明显低于任何一个支路。TCP协议发送窗口的大小变化会引起网络流量自相似程度的变化。The characteristics of network traffic are vital for network engineering and the study of network performance. Based on the theory of self-similarity, the evolution process of the self-similarity characteristics with the load increasing on backbone link is studied. The experiment shows that the self-similarity of backbone traffic retains when multiple self-similar branch traffics are multiplexed together. The degree of self-similarity of backbone traffic is smaller than the ones of each branch traffic, especially under high throughput. The changes of the sizes of sending window of TCP can cause the variation of the self-similarity.

关 键 词：流量分析 宽带网络 自相似 仿真 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]