Wavelength Preference in GMPLS-controlled Wavelength Switched Optical Networks

Sambo, N.; Andriolli, N.; Giorgetti, A.; Castoldi, P.

doi:10.5296/npa.v3i2.819

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…In [14], a review of several strategies that employs the suggested vector approach is presented, including both, ROADMs with and without wavelength conversions.…”

Section: Related Workmentioning

confidence: 99%

Evaluation of segment-based crankback re-routing for GMPLS-based WSON

Jamhour

Penna

2013

Ict 2013

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The successful creation of lightpaths depends on updated information about network resources, such as the availability of wavelengths in the links along a path and the capability of the nodes to perform wavelength conversion. If signaling is performed with outdated information, a setup request of a lightpath may fail by selecting a path with insufficient network resources. An important GMPLS addition to the RSVP-TE was the possibility of correcting lightpath setup requests using crankback. Crankback extensions permit a node that was unable to forward a setup request to return the blocking information to the upstream nodes. In the segment-based crankback, any of the upstream nodes may attempt to correct the signaling by rerouting the request through an alternate path. Such a strategy, however, is not advantageous for any network topology. In this paper, we evaluate eight different network topologies to determine which network features favor the crankback strategy. To perform our evaluation, we consider several network metrics, including some used in SNA (Social Network Analisys).

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“…In [14], a review of several strategies that employs the suggested vector approach is presented, including both, ROADMs with and without wavelength conversions.…”

Section: Related Workmentioning

confidence: 99%

Evaluation of segment-based crankback re-routing for GMPLS-based WSON

Jamhour

Penna

2013

Ict 2013

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“…As feasible approach, each sub problem is solved separately in most of existing works [13]. Architecture of control plane performing the route and wavelength selection is also discussed [14]. There are many possible solutions to the RWA problem [15].…”

Section: A Routing and Wavelength Assignmentmentioning

confidence: 99%

Multi-tiers route design coordinating QoS-specific K shortest paths over optical network

Tode

Takada

Tanigawa

2015

2015 IEEE International Conference on Communication Workshop (ICCW)

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In the Wavelength Division Multiplexing (WDM) based optical circuit switching network, it takes longer time to set up the intermediate optical cross-connecting devices on the route. Thus, pre-computed routing approaches are desirable to instantly set up the connection. Most of their research works are based on the K Shortest Path (KSP) algorithm or it's variants considering route disjointness, because of load balancing effect in network, its simplicity, and quick response caused by heuristic approach. However, it essentially remains some issues to be solved, especially on the capability for various QoS support and fairer load balancing. In particular, the set of K shortest paths independently selected between any two nodes is insufficient for entire network load balancing. Specifically, sequential selection of the K routes for each source-destination (S-D) pair causes the unfairness and unbalance in network load among all S-D pairs. In the paper, to tackle the above problems, we propose multi-tiers route design method, which provides more enhanced load balancing by selecting QoS specific multiple routes for each node pair, coordinating with the routes for other node pairs. The proposed method is not the improvement of the KSP algorithm and it's variants themselves, but the framework to find a limited number (K') of adequate paths from the K (K' ≤ K) routes precomputed by KSP based algorithms for each S-D pair and each QoS level, taking spatial relationship between routes into account. Thus, the proposed method has complementary relationship with the KSP based algorithms themselves.

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Wavelength Preference in GMPLS-controlled Wavelength Switched Optical Networks

Cited by 2 publications

References 18 publications

Evaluation of segment-based crankback re-routing for GMPLS-based WSON

Evaluation of segment-based crankback re-routing for GMPLS-based WSON

Multi-tiers route design coordinating QoS-specific K shortest paths over optical network

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