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On the efficacy of fine-grained traffic splitting protocols in data center networks

Published: 11 June 2012 Publication History

Abstract

Current multipath routing techniques split traffic at a per-flow level because, according to conventional wisdom, forwarding packets of a TCP flow along different paths leads to packet reordering which is detrimental to TCP. In this paper, we revisit this "myth" in the context of cloud data center networks which have regular topologies such as multi-rooted trees. We argue that due to the symmetry in the multiple equal-cost paths in such networks, simply spraying packets of a given flow among all equal-cost paths, leads to balanced queues across multiple paths, and consequently little packet reordering. Using a testbed comprising of NetFPGA switches, we show how cloud applications benefit from better network utilization in data centers.

References

[1]
Mohammad Al-Fares, Alexander Loukissas, and Amin Vahdat, "A scalable, commodity data center network architecture," ACM SIGCOMM CCR, 2008.
[2]
Mohammad Al-fares, Sivasankar Radhakrishnan, Barath Raghavan, Nelson Huang, and Amin Vahdat, "Hedera: Dynamic flow scheduling for data center networks," In USENIX NSDI, 2010.
[3]
Andrew Curtis, Wonho Kim, and Praveen Yalagandula, "Mahout: Low-Overhead Datacenter Traffic Management using End-Host-Based Elephant Detection," In IEEE Infocom, 2011.
[4]
Albert Greenberg, James R. Hamilton, et al., "VL2: A Scalable and Flexible Data Center Network," In ACM SIGCOMM, 2009.
[5]
Costin Raiciu, Christopher Pluntke, et al., "Data Centre Networking with Multipath TCP," In HotNets-IX, 2010.
[6]
Sebastien Barr, "MultiPath TCP in the Linux Kernel," https://scm.info.ucl.ac.be/trac/mptcp/wiki/install.
[7]
Shan Sinha, Srikanth Kandula, and Dina Katabi, "Harnessing TCPs Burstiness using Flowlet Switching," In HotNets-III, 2004.

Cited By

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  • (2013)Analyzing Packet-Level Routing in Data CentersProceedings of the 2013 IEEE 11th International Conference on Dependable, Autonomic and Secure Computing10.1109/DASC.2013.141(648-652)Online publication date: 21-Dec-2013

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    Published In

    cover image ACM SIGMETRICS Performance Evaluation Review
    ACM SIGMETRICS Performance Evaluation Review  Volume 40, Issue 1
    Performance evaluation review
    June 2012
    433 pages
    ISSN:0163-5999
    DOI:10.1145/2318857
    Issue’s Table of Contents
    • cover image ACM Conferences
      SIGMETRICS '12: Proceedings of the 12th ACM SIGMETRICS/PERFORMANCE joint international conference on Measurement and Modeling of Computer Systems
      June 2012
      450 pages
      ISBN:9781450310970
      DOI:10.1145/2254756

    Publisher

    Association for Computing Machinery

    New York, NY, United States

    Publication History

    Published: 11 June 2012
    Published in SIGMETRICS Volume 40, Issue 1

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    Author Tags

    1. data centers
    2. traffic splitting

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    • (2013)Analyzing Packet-Level Routing in Data CentersProceedings of the 2013 IEEE 11th International Conference on Dependable, Autonomic and Secure Computing10.1109/DASC.2013.141(648-652)Online publication date: 21-Dec-2013

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