research-article

Performance-Driven Internet Path Selection

Authors:

Maria Apostolaki,

Laurent VanbeverAuthors Info & Claims

SOSR '21: Proceedings of the ACM SIGCOMM Symposium on SDN Research (SOSR)

Pages 41 - 53

https://doi.org/10.1145/3482898.3483366

Published: 08 November 2021 Publication History

Abstract

Internet routing can often be sub-optimal, with the chosen routes providing worse performance than other available policy-compliant routes. This stems from the lack of visibility into route performance at the network layer. While this is an old problem, we argue that recent advances in programmable hardware finally open up the possibility of performance-aware routing in a deployable, BGP-compatible manner.

We introduce RouteScout, a hybrid hardware/software system supporting performance-based routing at ISP scale. In the data plane, RouteScoutleverages P4-enabled hardware to monitor performance across policy-compliant route choices for each destination, at line-rate and with a small memory footprint. RouteScout'scontrol plane then asynchronously pulls aggregated performance metrics to synthesize a performance-aware forwarding policy.

We show that RouteScoutcan monitor performance across most of an ISP's traffic, using only 4 MB of memory. Further, its control can flexibly satisfy a variety of operator objectives, with sub-second operating times.

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Index Terms

Performance-Driven Internet Path Selection
1. Networks

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cover image ACM Conferences

SOSR '21: Proceedings of the ACM SIGCOMM Symposium on SDN Research (SOSR)

October 2021

190 pages

ISBN:9781450390842

DOI:10.1145/3482898

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Published: 08 November 2021

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SOSR '21: The ACM SIGCOMM Symposium on SDN Research

October 11 - 12, 2021

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Overall Acceptance Rate 7 of 43 submissions, 16%

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https://doi.org/10.23919/IFIPNetworking62109.2024.10619865
Gong FRaghunathan DGupta AApostolaki MSekar VYu MSeneviratne AVeitch D(2024)Zoom2Net: Constrained Network Telemetry ImputationProceedings of the ACM SIGCOMM 2024 Conference10.1145/3651890.3672225(764-777)Online publication date: 4-Aug-2024
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https://doi.org/10.1109/NOMS59830.2024.10575719
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