Evaluation of Speedup and Expansion in Terabit Switch Fabrics

Sarah Renée Ruepp, Andreas Rytlig, Michael Stübert Berger, Henrik Wessing, Anna Manolova Fagertun, Hao Yu, Anders Rasmussen

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This paper evaluates speedup and expansion in a multi-stage Terabit switch fabric. Single-stage switch fabrics, e.g. crossbar switches, are difficult to scale up to a Terabit system. Hence, a multi-stage switch fabric, where traffic can be distributed on different chips, offers a promising perspective. We evaluate buffer usage, number of out-of-sequence cells and fabric delay. Simulation results obtained in OPNET Modeler show that speedup outperforms expansion and that both approaches significantly gain from applying an output line speedup. By reducing the buffer usage in the middle stage, fewer cells arrive out-of-sequence and hence the need for re-sequencing is decreased as well.
Original languageEnglish
Title of host publicationProceedings of OPNETWORK 2011
Number of pages6
Publication date2011
Publication statusPublished - 2011
EventOPNETWORK 2011 - Washington DC, United States
Duration: 29 Aug 20111 Sep 2011


ConferenceOPNETWORK 2011
CountryUnited States
CityWashington DC
Internet address

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  • OPNETWORK 2011

    Hao Yu (Participant)

    27 Aug 20112 Sep 2011

    Activity: Attending an eventParticipating in or organising workshops, courses, seminars etc.

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