Inter-Domain Routing Scalability in Optical DWDM Networks

Liu, Q.; Xie, Chengyu; Frangieh, T.; Ghani, Nasir; Gumaste, Ashwin; Rao, Nageswara S. V.; Lehman, Tom

doi:10.1109/icccn.2008.ecp.22

Cited by 9 publications

(10 citation statements)

References 15 publications

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“…In this regard, several inter-domain state dissemination policies have been proposed and evaluated in [14], showing that threshold-based strategies such as absolute change, relative change, and hysteresis-based yield the lowest routing overhead and better information accuracy.…”

Section: Path Computation In Multi-domain/multi-granular Network Scenmentioning

confidence: 99%

Some open issues in multi-domain/multi-operator/multi-granular ASON/GMPLS networks

Spadaro

Velasco

Perelló

et al. 2009

2009 11th International Conference on Transparent Optical Networks

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Large optical backbone networks may be composed of several domains, each one controlled by different administrators/operators. Besides, the bandwidth granularity of these domains may be different. Label Switched Paths (LSPs) provisioning in multi-domain/multi-operators/multi-layer network scenarios is a challenging problem actually, which has to be properly faced. In this paper, some open issues related to end-to-end bandwidth provisioning are discussed. Among others, the grooming problem in multi-layer/multi-domain optical networks and the performance degradation of recovery mechanisms due to limited inter-domain knowledge are analyzed.

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Section: Path Computation In Multi-domain/multi-granular Network Scenmentioning

confidence: 99%

Some open issues in multi-domain/multi-operator/multi-granular ASON/GMPLS networks

Spadaro

Velasco

Perelló

et al. 2009

2009 11th International Conference on Transparent Optical Networks

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“…Finally, resource dissemination requires effective inter-domain update triggering strategies [17]. Various routing policies are available here, such as timer-based, absolute change, relative change, and hysteresis-based.…”

Section: State Disseminationmentioning

confidence: 99%

“…Here, using fixed intervals to compute abstractions and propagate updates can yield high messaging/compute loads (short intervals) or high inaccuracy (long intervals). Ideally, hybrid periodic/thresholdbased strategies must be developed [14,17].…”

Section: State Disseminationmentioning

confidence: 99%

“…Then, these lightpaths are signaled and expanded using RSVP-TE with wavelength trace vectors. Because routing scalability is a major concern for full-mesh abstraction, two improved update strategies also are defined herein, maximum relative change (MRC) and mostused maximum relative change (MU-MRC) [17]. The former limits updates to abstract links experiencing maximum wavelength changes, up to h updates per domain; whereas, the latter further restricts updates contingent to the actual wavelengths that change status (and not just the number, as in MRC).…”

Section: Sample Studymentioning

confidence: 99%

“…The former limits updates to abstract links experiencing maximum wavelength changes, up to h updates per domain; whereas, the latter further restricts updates contingent to the actual wavelengths that change status (and not just the number, as in MRC). In other words, only those abstract links experiencing the most number of changes in the MU wavelengths are updated, that is, the top m out of top h; see [17] for details.…”

Section: Sample Studymentioning

confidence: 99%

See 2 more Smart Citations

Control plane design in multidomain/multilayer optical networks

Ghani¹,

Liu

Benhaddou

et al. 2008

IEEE Commun. Mag.

Self Cite

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As optical networks proliferate, there is a growing need to address distributed multidomain provisioning. Although multi-domain operation has been well-studied in packet/cellswitching networks, the multilayer (granularity) circuit-switched nature of modern optical networks presents a unique set of challenges. This survey addresses control plane design for such heterogeneous infrastructures and describes new challenges in the areas of state dissemination, path computation, and survivability. Sample results from a recent study also are presented.

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