Inferring persistent interdomain congestion
Inferring persistent interdomain congestion
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DOI：
10.1145/3230543.3230549
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发表时间：
2018-08
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通讯作者：
A. Dhamdhere;D. Clark;Alexander Gamero-Garrido;M. Luckie;Ricky K. P. Mok;Gautam Akiwate;Kabir Gogia;Vaibhav Bajpai;A. Snoeren;K. Claffy
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作者：
A. Dhamdhere;D. Clark;Alexander Gamero-Garrido;M. Luckie;Ricky K. P. Mok;Gautam Akiwate;Kabir Gogia;Vaibhav Bajpai;A. Snoeren;K. Claffy
关于持续居民交通拥堵的程度，范围和消费者危害，对技术和政策社区的兴趣很大。我们通过开发一种系统和方法来衡量数千个域间链接的拥堵而无需直接访问它们的系统来讨论交通拥堵的经验基础。我们根据时间序列延迟探针（TSLP）技术实施一个系统，该系统识别出与重复交通拥堵的链接的链接，暗示了一个链接不足的链接。我们在全球86个有利位置部署系统，并表明使用轻量级TSLP方法推断出拥堵与其他互连性能障碍的指标相关。我们使用我们的方法来研究2016年3月至2017年12月的八个大型美国宽带访问提供商的域间链接，并验证我们针对两个提供商的地面交通统计数据的推论。在我们收集测量的一段时间内，我们没有发现有关访问ISP与直接连接的运输和内容提供商之间域间联系的广泛流行的证据，尽管某些这样的链接表现出了经常性的拥塞模式。我们描述了局限性，开放挑战和通往该方法进行Internet互连生态系统大规模第三方监测的途径。
There is significant interest in the technical and policy communities regarding the extent, scope, and consumer harm of persistent interdomain congestion. We provide empirical grounding for discussions of interdomain congestion by developing a system and method to measure congestion on thousands of interdomain links without direct access to them. We implement a system based on the Time Series Latency Probes (TSLP) technique that identifies links with evidence of recurring congestion suggestive of an under-provisioned link. We deploy our system at 86 vantage points worldwide and show that congestion inferred using our lightweight TSLP method correlates with other metrics of interconnection performance impairment. We use our method to study interdomain links of eight large U.S. broadband access providers from March 2016 to December 2017, and validate our inferences against ground-truth traffic statistics from two of the providers. For the period of time over which we gathered measurements, we did not find evidence of widespread endemic congestion on interdomain links between access ISPs and directly connected transit and content providers, although some such links exhibited recurring congestion patterns. We describe limitations, open challenges, and a path toward the use of this method for large-scale third-party monitoring of the Internet interconnection ecosystem.