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带宽是网络规划、管理和性能优化的重要指标.主动带宽测量技术可以跨越多个自治系统实现端到端的带宽测量,因此被广泛研究,目前已提出了大量的主动带宽测量算法.比较算法性能是设计精确、高效、健壮带宽测量算法的基础.本文定义算法的性能评价指标;通过大量带宽测量实验,从原理和实验结果分析指出误差累计和背景流量影响是影响现有测量算法性能的最主要原因.在此基础上,提出和实现一个任意链路带宽测量方法,该方法可以消除逐跳测量造成的误差累计和背景流量影响.
Bandwidth is an important indicator of network planning, management and performance optimization.Active bandwidth measurement technology can achieve end-to-end bandwidth measurement across multiple autonomous systems and has been widely studied and a large number of active bandwidth measurement algorithms have been proposed. The performance of the comparison algorithm is Design an accurate, efficient and robust bandwidth measurement algorithm.This paper defines the performance evaluation index of the algorithm. Through a large number of bandwidth measurement experiments, it is pointed out from the principle and experimental results that error accumulation and background flow influence are the main factors affecting the performance of the existing measurement algorithms On this basis, an arbitrary link bandwidth measurement method is proposed and implemented, which can eliminate the error accumulation caused by hop - by - hop measurement and the impact of background traffic.