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      On the latency impact of remote peering

      Mazzola, Fabricio; Marcos, Pedro; Castro, Ignacio; Luckie, Matthew John; Barcellos, Marinho
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      PAM 2022 paper.pdf
      Accepted version, 799.7Kb
      DOI
       10.1007/978-3-030-98785-5_16
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      Permanent link to Research Commons version
      https://hdl.handle.net/10289/14838
      Abstract
      Internet Exchange Points (IXPs) play an essential role in the Internet, providing a fabric for thousands of Autonomous Systems (ASes) to interconnect. Initially designed to keep local traffic local, IXPs now interconnect ASes all over the world, and the premise that IXP routes should be shorter and faster than routes through a transit provider may not be valid anymore. Using BGP views from eight IXPs (three in Brazil, two in the U.S., and one each in London, Amsterdam, and Johannesburg), a transit connection at each of these locations, and latency measurements we collected in May 2021, we compare the latency to reach the same addresses using routes from remote peers, local peers, and transit providers. For four of these IXPs, at least 71.4% of prefixes advertised by remote peers also had a local peering route, BGP generally preferred the remote route due to its shorter AS path, but the local route had lower latency than the remote route in the majority of cases. When a remote route was the only peering route available at an IXP, it had slightly lower latency than a corresponding transit route available outside the IXP for >57.6% of the prefixes for seven of the eight IXPs.
      Date
      2022
      Type
      Conference Contribution
      Publisher
      Springer
      Rights
      © The Author(s), under exclusive license to Springer Nature Switzerland AG 2022.This is the author's accepted version. The final publication is available at Springer via dx.doi.org/10.1007/978-3-030-98785-5_16
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      • Computing and Mathematical Sciences Papers [1455]
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