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Measurement of Loss Pairs in Network Paths

机译:网络路径中损耗对的测量

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Loss-pair measurement was proposed a decade ago for discovering network path properties, such as a router's buffer size. A packet pair is regarded as a loss pair if exactly one packet is lost. Therefore, the residual packet's delay can be used to infer the lost packet's delay. Despite this unique advantage shared by no other methods, no loss-pair measurement in actual networks has ever been reported. In this paper, we further develop the loss-pair measurement and make the following contributions. First, we characterize the residual packet's delay by including other important factors (such as the impact of the first packet in the pair) which were ignored before. Second, we employ a novel TCP-based probing method to measure from a single endpoint all four possible loss pairs for a round-trip network path. Third, we conducted loss-pair measurement for 88 round-trip paths continuously for almost three weeks. Being the first set of loss-pair measurement, we obtained a number of original results, such as prevalence of loss pairs, distribution of different types of loss pairs, and effect of route change on the paths' congestion state.
机译:十年前提出了丢失对测量以发现网络路径属性,例如路由器的缓冲区大小。如果始终丢失了一个数据包,则将数据包对被视为损耗对。因此,剩余数据包的延迟可用于推断丢失的数据包延迟。尽管没有其他方法共享的这种独特的优势,但没有报告实际网络中的损失对测量。在本文中,我们进一步发展了损失对测量并进行以下贡献。首先,我们通过在以前忽略的其他重要因素(例如第一包中的第一个数据包的影响)来表征残余分组的延迟。其次,我们采用了一种新的基于TCP的探测方法来从单个端点测量到往返网络路径的所有四种可能的损耗对。第三,我们连续地对88条往返路径进行损失 - 对测量近三周。作为第一组损失对测量,我们获得了许多原始结果,例如损耗对的普遍性,不同类型的损耗对的分布,以及路径的拥塞状态的路径变化的影响。

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