Modeling WDM Wavelength Switching Systems for Use in GMPLS and Automated Path Computation

Bernstein, Greg; Lee, Young; Gavler, Anders; Mårtensson, Jonas

doi:10.1364/jocn.1.000187

Cited by 14 publications

(13 citation statements)

References 5 publications

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“…Also, IETF is discussing on how to include QoT information within GMPLS. For this purpose, the IETF drafts [20] [21] propose to account for physical impairments by exploiting GMPLS extensions which include wavelength-by-wavelength physical parameter 2 values, again with a structure similar than the ones of Suggested Vector.…”

Section: Lightpath Set Up With Wavelength Preferencementioning

confidence: 99%

“…The three WSON scenarios, have been evaluated on the Pan-European topology illustrated in Figure 4, consisting of N = 17 nodes 2 and L = 33 links. Each link is bi-directional and carries W = 40 wavelengths per direction.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…The data plane comprises wavelength division multiplexing (WDM) fiber links connecting optical cross-connects (OXCs) through a comb of up to 80 wavelength channels, with typical data rates of 10 or 40 Gb/s. Optical end-to-end connections (i.e., lightpaths) are established in the optical domain and switched by OXCs at the wavelength granularity [2]. The dynamic provisioning and maintenance of lightpaths is managed by the control plane.…”

Section: Introductionmentioning

confidence: 99%

“…Since in WSONs the switching is based on the utilized wavelength, the wavelength assignment has a huge impact on the network performance [2]. Wavelength assignment impacts at least on the following network performance metrics: i) lightpath blocking probability; ii) wavelength converters usage; iii) quality of transmission (QoT), i.e.…”

Section: Introductionmentioning

confidence: 99%

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Wavelength Preference in GMPLS-controlled Wavelength Switched Optical Networks

Sambo

Andriolli

Giorgetti

et al. 2011

NPA

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Given the potentialities in terms of high bandwidth, low costs, and low power consumption, Wavelength Switched Optical Networks (WSONs) are the most promising candidate for next generation backbone networks. In WSONs the optical signal is switched at the wavelength granularity, therefore the wavelength assignment process plays a crucial role in dynamic network operation.Generalized Multi-Protocol Label Switching (GMPLS) is the standard control plane for WSONs. However, current GMPLS protocol suite does not envision a general mechanism to rank the wavelengths. The lack of wavelength preference in WSONs may cause high blocking probability, wavelength converter waste, and detrimental effects due to physical impairments. This paper reviews several WSON scenarios where the wavelength preference concept is introduced to optimize the wavelength assignment: wavelength continuous, wavelength convertible, and quality of transmission aware WSONs. To enforce wavelength preference, an extension to the GMPLS signaling protocol is utilized. Simulation results show that wavelength preference can effectively reduce blocking probability, save wavelength converters, and guarantee lightpath quality of transmission.

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Section: Lightpath Set Up With Wavelength Preferencementioning

confidence: 99%

Section: Performance Evaluationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Wavelength Preference in GMPLS-controlled Wavelength Switched Optical Networks

Sambo

Andriolli

Giorgetti

et al. 2011

NPA

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show abstract

“…The PAFT problem arises in many contexts. In optical networks, nodes can have asymmetric switching capabilities mostly due to cost-relevant reasons [3,6]. This means that a node has some restrictions on its internal connectivity: traffic on a certain ingress port can only reach a subset of the egress ports.…”

Section: Introductionmentioning

confidence: 99%

Finding Paths in Grids with Forbidden Transitions

Kanté

Moataz

Momège

et al. 2016

Graph-Theoretic Concepts in Computer Science

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Elastic optical networks: The global evolution to software configurable optical networks

Layec¹,

Morea²,

Vacondio³

et al. 2013

Bell Labs Tech. J.

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Worldwide operator deployment of high‐speed 100G coherent optical networks is currently underway. To ensure a competitive solution offering significant performance improvements to cope with the ever‐increasing traffic demand, a novel network concept has been proposed for improved resource utilization based on “elasticity”; specifically, the ability to make a number of previously fixed transmission parameters tunable, for example optical data rate or channel spacing. The benefits are numerous, including increased network capacity, lower cost per bit, and improved energy efficiency and scalability. In this paper, we review the work carried out within the Cooperation for a Sustained European Leadership in Telecommunications (CELTIC) Elastic‐Optical NETwork (EO‐Net) project towards advancing the state of software‐configurable optical networking. We identify the key building blocks for enabling elastic optical networks to provide desired performance improvements over static optical networks. We examine the design of elastic transponders capable of data rate adaptation, interfaces between client packet devices and transponders supporting flexible traffic aggregation, and associated algorithms for traffic grooming and routing. We also perform network cost/energy analyses. Finally, we review the experimental demonstration of such elastic functionalities. © 2013 Alcatel‐Lucent.

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Modeling WDM Wavelength Switching Systems for Use in GMPLS and Automated Path Computation

Cited by 14 publications

References 5 publications

Wavelength Preference in GMPLS-controlled Wavelength Switched Optical Networks

Wavelength Preference in GMPLS-controlled Wavelength Switched Optical Networks

Finding Paths in Grids with Forbidden Transitions

Elastic optical networks: The global evolution to software configurable optical networks

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