Disaster-Resilient Optical Network Survivability: A Comprehensive Survey

Photonics

Muhammad Faheem¹  SeviaM. Idrus²  Farabi Iqbal²  MuhammadWaqar Ashraf²  RizwanAslam Butt³ 

[1] Technology, Karachi 75270, Pakistan;Department of Electrical Engineering, Universiti Teknologi Malaysia, Johor 81300, Malaysia;;Department of Telecom Engineering, NED University of Engineering &

关键词: network survivability;    protection;    restoration;    disaster-aware routing;    congestion-aware routing;    optical networks;   

DOI  :  10.3390/photonics5040035

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown