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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. 12 — Dec. 1, 2011
  • pp: 902–911

Stable Routing With Virtual Topology Capacity Adjustment: A Novel Paradigm for Operating Optical Networks

Pablo Pavon-Marino and Nina Skorin-Kapov  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 3, Issue 12, pp. 902-911 (2011)
http://dx.doi.org/10.1364/JOCN.3.000902


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Abstract

Advances in optical equipment permit network carriers to offer lightpath-on-demand services to Internet service providers (ISPs). These services are the key for constructing cost-efficient virtual topology capacity adjustment (VTCA) schemes, where ISPs dynamically adapt the number of lightpaths contracted between their IP routers, according to time-varying traffic volumes. An existing technique called lightpath bundling offers ISPs the possibility of grouping lightpaths between the same pair of routers into so-called bundles, perceived by the IP layer as single virtual links of aggregated capacity. Consequently, new lightpaths added or removed from bundles are not seen by the IP layer as new links necessary to advertise, but simply as capacity adjustments of already existing links. Adding lightpath bundling to the picture opens the door for developing VTCA schemes which maintain stability in the IP routing tables, a major requirement for ISPs. In this paper, we present and evaluate the merits of the proposed stable routing VTCA (SR-VTCA) paradigm and present algorithms for designing such a scheme. The results clearly show that SR-VTCA gives an advantageous trade-off between the fully static network with no capacity adjustment and the fully dynamic VTCA scheme where both the IP routing and the VT are reconfigured over time.

© 2011 OSA

OCIS Codes
(060.1155) Fiber optics and optical communications : All-optical networks
(060.4251) Fiber optics and optical communications : Networks, assignment and routing algorithms

ToC Category:
Research Papers

History
Original Manuscript: August 3, 2011
Revised Manuscript: October 7, 2011
Manuscript Accepted: October 8, 2011
Published: November 7, 2011

Citation
Pablo Pavon-Marino and Nina Skorin-Kapov, "Stable Routing With Virtual Topology Capacity Adjustment: A Novel Paradigm for Operating Optical Networks," J. Opt. Commun. Netw. 3, 902-911 (2011)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-3-12-902


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