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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and V. Chan
  • Vol. 3, Iss. 8 — Aug. 1, 2011
  • pp: 629–640

Survivable IP/MPLS-Over-WSON Multilayer Network Optimization

M. Ruiz, O. Pedrola, L. Velasco, D. Careglio, J. Fernández-Palacios, and G. Junyent  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 3, Issue 8, pp. 629-640 (2011)
http://dx.doi.org/10.1364/JOCN.3.000629


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Abstract

Network operators are facing the problem of dimensioning their networks for the expected huge IP traffic volumes while keeping constant or even reducing the connectivity prices. Therefore, new architectural solutions able to cope with the expected traffic increase in a more cost-effective way are needed. In this work, we study the survivable IP/multi-protocol label switching (MPLS) over wavelength switched optical network (WSON) multilayer network problem as a capital expenditure (CAPEX) minimization problem. Two network approaches providing survivability against optical links, IP/MPLS nodes, and opto-electronic port failures are compared: the classical overlay approach where two redundant IP/MPLS networks are deployed, and the new joint multilayer approach which provides the requested survivability through an orchestrated interlayer recovery scheme which minimizes the over-dimensioning of IP/MPLS nodes. Mathematical programming models are developed for both approaches. Solving these models, however, becomes impractical for realistic networks. In view of this, evolutionary heuristics based on the biased random-key genetic algorithm framework are also proposed. Exhaustive experiments on several reference network scenarios illustrate the effectiveness of the proposed approach in minimizing network CAPEX.

© 2011 OSA

OCIS Codes
(060.4256) Fiber optics and optical communications : Networks, network optimization
(060.4257) Fiber optics and optical communications : Networks, network survivability

ToC Category:
Regular Papers

History
Original Manuscript: February 14, 2011
Revised Manuscript: May 18, 2011
Manuscript Accepted: July 4, 2011
Published: July 29, 2011

Citation
M. Ruiz, O. Pedrola, L. Velasco, D. Careglio, J. Fernández-Palacios, and G. Junyent, "Survivable IP/MPLS-Over-WSON Multilayer Network Optimization," J. Opt. Commun. Netw. 3, 629-640 (2011)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-3-8-629

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