Survivable WDM mesh networks. Part I-Protection

This investigation considers optical networks which employ wavelength cross-connects that enable the establishment of wavelength-division-multiplexed (WDM) channels, between node-pairs. In such and other networks, the failure of a network element (e.g., fiber link, cross-connect, etc.) may cause the...

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Vydáno v:IEEE INFOCOM '99. Conference on Computer Communications. Proceedings. Eighteenth Annual Joint Conference of the IEEE Computer and Communications Societies. The Future is Now (Cat. No.99CH36320) Ročník 2; s. 744 - 751 vol.2
Hlavní autoři: Ramamurthy, S., Mukherjee, B.
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 1999
Témata:
Mesh networks
Optical fiber networks
Optical interconnections
Optical network units
Optical packet switching
Optical wavelength conversion
Protection
Protocols
Wavelength division multiplexing
WDM networks
ISBN:0780354176, 9780780354173
ISSN:0743-166X
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Popis
Shrnutí:This investigation considers optical networks which employ wavelength cross-connects that enable the establishment of wavelength-division-multiplexed (WDM) channels, between node-pairs. In such and other networks, the failure of a network element (e.g., fiber link, cross-connect, etc.) may cause the failure of several optical channels, thereby leading to large data losses. This study examines different approaches to protect mesh based WDM optical networks from single-link failures. These approaches are based on two basic survivability paradigms: (a) path protection/restoration, and (b) link protection/restoration. In path- and link-protection schemes, backup paths and wavelengths are reserved in advance at the time of call setup. Path- and link-restoration schemes are dynamic schemes in which backup paths are discovered (from the spare capacity in the network) upon the occurrence of a failure. In part 1 of this study presented in this paper, we formulated integer linear programs to determine the capacity requirements for the above protection schemes for a static traffic demand.
ISBN:0780354176
9780780354173
ISSN:0743-166X
DOI:10.1109/INFCOM.1999.751461