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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 4, Iss. 11 — Nov. 1, 2012
  • pp: 918–935

Multicast Traffic Grooming in Tap-and-Continue WDM Mesh Networks

Rongping Lin, Wen-De Zhong, Sanjay Kumar Bose, and Moshe Zukerman  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 4, Issue 11, pp. 918-935 (2012)
http://dx.doi.org/10.1364/JOCN.4.000918


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Abstract

Multicast applications are expected to be major drivers of Internet traffic growth. As most multicast connections require much lower bandwidth than the capacity offered by a wavelength, multicast traffic grooming is needed to efficiently use network resources. Recent research on multicast grooming has focused on light-trees because of their natural advantage for multicast traffic. However, using light-trees may lead to some serious negative side effects because of light splitting. In this paper, we investigate the multicast traffic grooming problem in tap-and-continue (TaC) networks, where a node can tap a small amount of incoming optical power for the local station while forwarding the remainder to an output. We first propose a simple and efficient node architecture with the TaC mechanism. We use this in an integer linear programming (ILP) formulation with the objective of minimizing the network cost in terms of the number of higher layer electronic ports and the number of wavelengths used. Since the ILP is not scalable, two heuristic algorithms, multicast trail grooming (MTG) and multiple destination trail-based grooming (MDTG), are proposed. Using the ILP, we show that having more costly nodes with multicast capability does not improve the performance significantly. The solutions obtained by MTG and MDTG are close to the ILP optimal solution. MTG and MDTG are shown to work efficiently for typical network topologies such as NSFNET, with MTG showing better performance than MDTG.

© 2012 OSA

OCIS Codes
(060.4254) Fiber optics and optical communications : Networks, combinatorial network design
(060.4255) Fiber optics and optical communications : Networks, multicast

ToC Category:
Regular Papers

History
Original Manuscript: May 21, 2012
Revised Manuscript: September 2, 2012
Manuscript Accepted: September 19, 2012
Published: November 1, 2012

Citation
Rongping Lin, Wen-De Zhong, Sanjay Kumar Bose, and Moshe Zukerman, "Multicast Traffic Grooming in Tap-and-Continue WDM Mesh Networks," J. Opt. Commun. Netw. 4, 918-935 (2012)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-4-11-918

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