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Persistent Last-mile Congestion: Not so Uncommon

Published: 27 October 2020 Publication History
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  • Abstract

    Last-mile is the centerpiece of broadband connectivity, as poor last-mile performance generally translates to poor quality of experience. In this work we investigate last-mile latency using traceroute data from RIPE Atlas probes located in 646 ASes and focus on recurrent performance degradation. We find that in normal times probes in only 10% ASes experience persistent last-mile congestion but we recorded 55% more congested ASes during the COVID-19 outbreak. Persistent last-mile congestion is not uncommon, it is usually seen in large eyeball networks and may span years. With the help of CDN access log data, we dissect results for major ISPs in Japan, the most severely affected country in our study, and ascertain bottlenecks in the shared legacy infrastructure.

    Supplementary Material

    MP4 File (imc2020-269-long_01.mp4)
    In this video we present an analysis of persistent last-mile congestion where we found that this type of congestion\r\nappears consistently for Atlas probes located in 10% of monitored ASes, including large eyeball networks. In addition, we recorded persistent last-mile congested probes in 55% more ASes during the COVID-19 outbreak. Our detailed analysis of Japan?s major ISPs with the help of CDN logs confirmed that detected last-mile congestion has a drastic impact on users throughput.\r\n

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        cover image ACM Conferences
        IMC '20: Proceedings of the ACM Internet Measurement Conference
        October 2020
        751 pages
        ISBN:9781450381383
        DOI:10.1145/3419394
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        Published: 27 October 2020

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        IMC '20 Paper Acceptance Rate 53 of 216 submissions, 25%;
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        • (2023)A First Look at the Spatial and Temporal Variability of Internet Performance Data in Hyperlocal GeographiesSSRN Electronic Journal10.2139/ssrn.4568668Online publication date: 2023
        • (2023)Divided at the Edge - Measuring Performance and the Digital Divide of Cloud Edge Data CentersProceedings of the ACM on Networking10.1145/36291381:CoNEXT3(1-23)Online publication date: 28-Nov-2023
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