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Greening the NetFPGA Reference Router

Author

Listed:
  • Feng Guo

    (School of Electronic Engineering, Dublin City University, Dublin 9, Ireland
    These authors contributed equally to this work.)

  • Xiaojun Wang

    (School of Electronic Engineering, Dublin City University, Dublin 9, Ireland
    These authors contributed equally to this work.)

  • Mei Song

    (School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China)

  • Yifei Wei

    (School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China)

  • Olga Ormond

    (School of Electronic Engineering, Dublin City University, Dublin 9, Ireland)

  • Martin Collier

    (School of Electronic Engineering, Dublin City University, Dublin 9, Ireland)

Abstract

Energy efficiency is an important criterion in the design of next generation networks for both economic and environmental concerns. This paper presents an energy-efficient router that is able to dynamically adapt its routing capability in response to real-time traffic load, achieving energy proportional routing. The NetFPGA reference router, which operates at one of two frequencies (125 MHz or 62.5 MHz), requires a board reset to switch frequencies. We have modified the reference router to allow dynamic switching among five operating frequencies. Experiments with real traces indicate that, compared to the reference router, a 10% power reduction can be achieved through dynamic frequency scaling. When the router is further modified to support green traffic engineering and Ethernet port shut-down, power consumption can be reduced by 46% while maintaining the required quality of service. This allows the router to meet the instantaneous performance requirements while minimizing power dissipation. Similar results can be expected when these general power-saving principles are applied in future commercial routers.

Suggested Citation

  • Feng Guo & Xiaojun Wang & Mei Song & Yifei Wei & Olga Ormond & Martin Collier, 2016. "Greening the NetFPGA Reference Router," Energies, MDPI, vol. 9(7), pages 1-21, June.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:7:p:500-:d:73039
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    References listed on IDEAS

    as
    1. Moyer, Jonathan D. & Hughes, Barry B., 2012. "ICTs: Do they contribute to increased carbon emissions?," Technological Forecasting and Social Change, Elsevier, vol. 79(5), pages 919-931.
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