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Photonics 2018, 5(4), 35; https://doi.org/10.3390/photonics5040035

Disaster-Resilient Optical Network Survivability: A Comprehensive Survey

1
Department of Electrical Engineering, Universiti Teknologi Malaysia, Johor 81300, Malaysia
2
Department of Computer Engineering, Bahauddin Zakariya University, Multan 60650, Pakistan
3
Department of Telecom Engineering, NED University of Engineering & Technology, Karachi 75270, Pakistan
4
Department of Computer Engineering, Abdullah Gul University, Kayseri 38080, Turkey
*
Author to whom correspondence should be addressed.
Received: 30 July 2018 / Revised: 3 September 2018 / Accepted: 7 September 2018 / Published: 12 October 2018
(This article belongs to the Special Issue Lightwave Communications and Optical Networks)
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Abstract

Network survivability endeavors to ensure the uninterrupted provisioning of services by the network operators in case of a disaster event. Studies and news reports show that network failures caused by physical attacks and natural disasters have significant impacts on the optical networks. Such network failures may lead to a section of a network to cease to function, resulting in non-availability of services and may increase the congestion within the rest of the network. Therefore, fault tolerant and disaster-resilient optical networks have grasped the attention of the research community and have been a critical concern in network studies during the last decade. Several studies on protection and restoration techniques have been conducted to address the network component failures. This study reviews related previous research studies to critically discuss the issues regarding protection, restoration, cascading failures, disaster-based failures, and congestion-aware routing. We have also focused on the problem of simultaneous cascading failures (which may disturb the data traffic within a layer or disrupt the services at upper layers) along with their mitigating techniques, and disaster-aware network survivability. Since traffic floods and network congestion are pertinent problems, they have therefore been discussed in a separate section. In the end, we have highlighted some open issues in the disaster-resilient network survivability for research challenges and discussed them along with their possible solutions. View Full-Text
Keywords: network survivability; protection; restoration; disaster-aware routing; congestion-aware routing; optical networks network survivability; protection; restoration; disaster-aware routing; congestion-aware routing; optical networks
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Ashraf, M.W.; Idrus, S.M.; Iqbal, F.; Butt, R.A.; Faheem, M. Disaster-Resilient Optical Network Survivability: A Comprehensive Survey. Photonics 2018, 5, 35.

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