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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 5, Iss. 6 — Jun. 1, 2013
  • pp: 565–573

On the Performance of a Large-Scale Optical Packet Switch Under Realistic Data Center Traffic

Nicola Calabretta, Roger Pueyo Centelles, Stefano Di Lucente, and Harmen J. S. Dorren  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 5, Issue 6, pp. 565-573 (2013)
http://dx.doi.org/10.1364/JOCN.5.000565


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Abstract

High-speed, submicrosecond-latency, large-port-count (thousands) optical packet switches (OPSs) for intercluster communication networks can become a key element in the deployment of cloud-oriented large-scale data centers. In this work we numerically investigate the performance of a large-port-count wavelength-division multiplexing (WDM) OPS based on a Spanke-type architecture with highly distributed control. We analyze it under a data center traffic model to determine its suitability for this type of environment. Results indicate that the proposed architecture can be scaled to 4096 ports while providing packet loss below 106 and latency under 1 μs, with a total switching capacity over 55Tbits/s. Additionally, we propose and analyze two WDM OPS architectures. The first one detects and processes small and large-sized Ethernet packets with two parallel switches. The second architecture includes multiple receivers to decrease packet losses and latency while using very limited electronic buffers. Results indicate that both techniques can lead to substantial improvements. In terms of packet loss and latency, they allow up to 40% higher input load with respect to the original WDM OPS architecture.

© 2013 Optical Society of America

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(060.4259) Fiber optics and optical communications : Networks, packet-switched
(200.6715) Optics in computing : Switching

ToC Category:
Research Papers

History
Original Manuscript: December 13, 2012
Revised Manuscript: March 15, 2013
Manuscript Accepted: April 15, 2013
Published: May 9, 2013

Citation
Nicola Calabretta, Roger Pueyo Centelles, Stefano Di Lucente, and Harmen J. S. Dorren, "On the Performance of a Large-Scale Optical Packet Switch Under Realistic Data Center Traffic," J. Opt. Commun. Netw. 5, 565-573 (2013)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-5-6-565

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