Comparing probe-and router-based packet-loss measurement
Comparing probe-and router-based packet-loss measurement
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DOI：
10.1109/mic.2004.34
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发表时间：
2004-09
影响因子：
3.2
通讯作者：
P. Barford;J. Sommers
中科院分区：
文献类型：
--
作者：
P. Barford;J. Sommers
互联网流量特征的经验分析不应受到用于收集数据的测量方法的偏见。我们比较了基于探针（活动）和基于路由器的（被动）方法，用于测量实验室和广域网络中的数据包丢失。实验室案例研究证明了以低损失率以被动简单网络测量协议（SNMP）测量的准确性；大区域的实验表明，主动探针损失率测量值与现场网络中路由器的SNMP测量的测量无关。该案例研究的发现还表明，对于数据包丢失的主动探测方法的常见方法遭受了较大的差异和最终主机界面损失的影响。
Empirical analysis of Internet traffic characteristics should not be biased by the measurement methodology used to gather data. We compare probe-(active) and router-based (passive) methods for measuring packet loss both in the laboratory and in a wide-area network. The laboratory case study demonstrates the accuracy of passive simple network measurement protocol (SNMP) measurements at low loss rates; the wide-area experiments show that active-probe loss-rate measurements don't correlate with those measured by SNMP from routers in a live network. This case study's findings also reveal that common methods for active probing for packet loss suffer from high variance and from the effects of end-host interface loss.