Path Routing in Mesh Optical Networks

Labourdette, Jean‐François; Bouillet, Eric; Ramamurthy, Ramu; Ellinas, Georgios

doi:10.1002/9780470032985

Cited by 63 publications

(42 citation statements)

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“…As the proposed approach targets the accurate localization of the failure, it can be used by service providers for reducing the MTTR, and consequently the human effort required for the identification and repair of the faulty component [2]. The main advantage of the proposed approach is that it does not assume the utilization of any probing lightpaths (extra monitoring equipment), thus reducing the network cost and the control management complexity.…”

Section: Introductionmentioning

confidence: 99%

“…Commonly observed faults in optical networks are caused by fiber cuts, equipment failures, excessive bit errors, and human error. After the detection of a failure, protection/restoration techniques are invoked so that the traffic is recovered prior to the localization and repair of the faulty component [2]- [4]. Most of the existing works deal with the single-link failure scenario, since the occurrence of more than one simultaneous link failures in an optical network is not very common.…”

Section: Introductionmentioning

confidence: 99%

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A probabilistic approach for failure localization

Panayiotou

Chatzis

Ellinas

2017

2017 International Conference on Optical Network Design and Modeling (ONDM)

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Abstract-This work considers the problem of fault localization in transparent optical networks. The aim is to localize singlelink failures by utilizing statistical machine learning techniques trained on data that describe the network state upon current and past failure incidents. In particular, a Gaussian Process (GP) classifier is trained on historical data extracted from the examined network, with the goal of modeling and predicting the failure probability of each link therein. To limit the set of suspect links for every failure incident, the proposed approach is complemented with the utilization of a Graph-Based Correlation heuristic. The proposed approach is tested on a dataset generated for an OFDM-based optical network, demonstrating that it achieves a high localization accuracy. The proposed scheme can be used by service providers for reducing the Mean-Time-ToRepair of the failure.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A probabilistic approach for failure localization

Panayiotou

Chatzis

Ellinas

2017

2017 International Conference on Optical Network Design and Modeling (ONDM)

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“…SRGs express the risk relationship that associates all the optical channels with a single failure as shown in Fig. 2 [23]. Clearly, the network designers or the network operators need to identify and map these SRGs so that the recovery algorithms can correctly calculate SRG-diverse backup paths that will always provide a viable backup route in the event of a failure.…”

Section: (B) Shared Protection Considerationsmentioning

confidence: 99%

“… The physical layer impairments (PLIs) incurred by the nonideal optical transmission medium accumulate along an optical path limiting the transmission reach of optical signals [23]- [27]. As PLIs accumulate, end-to-end system engineering is now required in the network, something that creates several challenges when fault recovery techniques are designed.…”

Section: (A) Physical Layer Impairment Considerationsmentioning

confidence: 99%

Practical issues for the implementation of survivability and recovery techniques in optical networks

Ellinas¹,

Papadimitriou²,

Rak³

et al. 2014

Optical Switching and Networking

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Failures in optical networks are inevitable. They may occur during work being done for the maintenance of other infrastructures, or on a larger scale as the result of an attack or large-scale disaster. As a result, service availability, an important aspect of Quality of Service (QoS), is often degraded. Appropriate fault recovery techniques are thus crucial to meet the requirements set by the Service Level Agreements (SLAs) between the carriers and their customers.In this paper, we focus on practical issues related to the deployment of fault recovery mechanisms in commercial optical networks. In particular, we outline the most important functionalities that, to our knowledge, need to be implemented, as well as discuss the related problems making deployment of fault recovery mechanisms difficult. Investigated topics include: fault recovery challenges (fault detection, location, and recovery), multiple failures recovery, as well as application of reliability mechanisms in elastic optical networks, and in multiprovider multilevel networks.

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“…Estratégias de sobrevivência a falhas tornou-se um requisito importante em redes EON. Em [72] recuperação a falha é definido como: "O processo de restabelecer a continuidade do tráfego por re-roteamento dos sinais em diversas instalações após a falha".…”

Section: Estratégias De Sobrevivênciaunclassified

Potencializando a modulação adaptativa com roteamento em múltiplos saltos em redes ópticas elásticas

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Path Routing in Mesh Optical Networks

Cited by 63 publications

References 0 publications

A probabilistic approach for failure localization

A probabilistic approach for failure localization

Practical issues for the implementation of survivability and recovery techniques in optical networks

Potencializando a modulação adaptativa com roteamento em múltiplos saltos em redes ópticas elásticas

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