GMPLS extensions to encompass shared regenerators in transparent optical networks

Cugini, F.; Sambo, N.; Giorgetti, A.; Valcarenghi, L.; Castoldi, P.; Rouzic, Esther Le; Poirrier, J.

doi:10.1049/ic:20070347

Cited by 13 publications

(23 citation statements)

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Section: Other Important Issues In Pli-aware Routingmentioning

confidence: 99%

“…Recently, handling regenerators using extended GMPLS control plane, specifically RSVP-TE, under a specific set of assumptions is addressed [78,79]. However, [78,79] does not consider the full set of PLIs and availability of transponders. The proposed distributed regenerator selection methods take a longer time to set up a lightpath due to the two-step process: in the first phase it attempts to use transparent paths and if it is not successful then the algorithm tries to use regenerators.…”

Section: Other Important Issues In Pli-aware Routingmentioning

confidence: 99%

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Physical layer impairment aware routing (PLIAR) in WDM optical networks: issues and challenges

Saradhi

Subramaniam

2009

IEEE Commun. Surv. Tutorials

149

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Abstract-In WDM optical networks, the physical layer impairments (PLIs) and their significance depend on network type-opaque, translucent, or transparent; the reach-access, metro, or core/long-haul; the number and type of network elements-fiber, wavelengths, amplifiers, switching elements, etc.; and the type of applications-real-time, non-real time, missioncritical, etc. In transparent optical networks, PLIs incurred by non-ideal optical transmission media accumulate along an optical path, and the overall effect determines the feasibility of the lightpaths. If the received signal quality is not within the receiver sensitivity threshold, the receiver may not be able to correctly detect the optical signal and this may result in high bit-error rates. Hence, it is important to understand various PLIs and their effect on optical feasibility, analytical models, and monitoring and mitigation techniques. Introducing optical transparency in the physical layer on one hand leads to a dynamic, flexible optical layer with the possibility of adding intelligence such as optical performance monitoring, fault management, etc. On the other hand, transparency reduces the possibility of client layer interaction with the optical layer at intermediate nodes along the path. This has an impact on network design, planning, control, and management.Hence, it is important to understand the techniques that provide PLI information to the control plane protocols and that use this information efficiently to compute feasible routes and wavelengths. The purpose of this article is to provide a comprehensive survey of various PLIs, their effects, and the available modeling and mitigation techniques. We then present a comprehensive survey of various PLI-aware network design techniques, regenerator placement algorithms, routing and wavelength assignment algorithms, and PLI-aware failure recovery algorithms. Furthermore, we identify several important research issues that need to be addressed to realize dynamically reconfigurable next-generation optical networks. We also argue the need for PLI-aware control plane protocol extensions and present several interesting issues that need to be considered in order for these extensions to be deployed in real-world networks.Index Terms-Wavelength division multiplexing, wavelengthrouted optical networks, routing and wavelength assignment, optical performance monitoring, optical layer service level agreements, transmission impairments, quality of transmission, physical layer impairment aware routing, impairment constraintbased routing, regenerator placement algorithms, physical layer impairment aware control plane, GMPLS-based WDM networks, and IP over WDM networks.

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Section: Other Important Issues In Pli-aware Routingmentioning

confidence: 99%

Section: Other Important Issues In Pli-aware Routingmentioning

confidence: 99%

Physical layer impairment aware routing (PLIAR) in WDM optical networks: issues and challenges

Saradhi

Subramaniam

2009

IEEE Commun. Surv. Tutorials

149

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“…In order to solve QoT distribution issues, studies in [8][9][10] have proposed the inclusion of QoT parameters within both, the RSVP-TE and OSPF-TE protocols. Recently, studies focussing on GMPLS extensions in the context of regenerator information dissemination have been proposed [11][12][13]. In [11,12], extensions to both, RSVP-TE and OSPF-TE protocols are proposed in order to account for shared regenerators in translucent networks.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, studies focussing on GMPLS extensions in the context of regenerator information dissemination have been proposed [11][12][13]. In [11,12], extensions to both, RSVP-TE and OSPF-TE protocols are proposed in order to account for shared regenerators in translucent networks. In [11], the authors have proposed lightweight GMPLS extensions to account for shared regenerators in translucent networks during lightpath establishment.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Optical Control Plane for Switching an Electro-Optical Hybrid Node in Translucent WDM Optical Networks

Iyer¹,

Singh²

2013

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In a translucent network scenario, development of an optical control plane (OCP) that is aware of the location and number of available regenerators and all-optical wavelength converters (AOWCs) is of paramount importance. However, current generalized multiprotocol label switching (GMPLS) protocol suite does not consider the distribution of regenerator and AOWC availability information to all the network nodes. In this paper, we propose a novel optical control plane (OCP) architecture that 1) disseminates information about network components (i.e. regenerators and AOWCs) to all the network nodes; and 2) evaluates candidate routes which use fewest amounts of network components. Performance of the proposed OCP is compared with a recently proposed hybrid OCP approach in terms of blocking performance, number of deployed components and lightpath establishment setup times. The obtained simulation results show that the proposed OCP approach demonstrates low connection blocking and establishes lightpaths by 1) minimizing the overall network cost owing to the deployment of minimum total number of network components; and 2) demonstrating acceptable lightpath establishment setup times at all traffic loads. Further, the proposed OCP methodology is compatible and suitable for controlling the operations of a novel electro-optical hybrid translucent node which is a latency efficient technology capable of delivering a cost effective implementation suitable for large scale deployment.

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Distributed optical control plane for dynamic lightpath establishment in translucent optical networks based on reachability graph

Salvadori

Chava

Zanardi

et al. 2013

Optical Switching and Networking

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GMPLS extensions to encompass shared regenerators in transparent optical networks

Cited by 13 publications

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Physical layer impairment aware routing (PLIAR) in WDM optical networks: issues and challenges

Physical layer impairment aware routing (PLIAR) in WDM optical networks: issues and challenges

A Novel Optical Control Plane for Switching an Electro-Optical Hybrid Node in Translucent WDM Optical Networks

Distributed optical control plane for dynamic lightpath establishment in translucent optical networks based on reachability graph

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