NDLI: Fault Localization at the WDM Layer

Content Provider	Springer Nature Link
Author	Mas, Carmen Thiran, Patrick Le Boudec, Jean Yves
Copyright Year	1999
Abstract	A single failure in a communication network may trigger many alarms. When the communication network uses optical fibers as transmission medium and increases its capacity by using Wavelength Division Multiplexing (WDM), the number of alarms and the difficulty to locate the failure are considerably higher. In this case, a single failure may interrupt several channels which causes a large information loss. We propose an Alarm Filtering Algorithm (AFA) for the fault management of an optical network that supports multiple failures and works in the presence of non-alarming elements, that is, network components which may fail but never generate an alarm (e.g. optical fibers). The algorithm provides a list of components whose failure explain the observed alarms. It avoids the use of failure probabilities, which are difficult to estimate, and does not need a global knowledge of the network topology. Moreover it also tolerates alarm losses and false alarms. The algorithm is tailored to the specific behavior of the hardware components of an optical network when a failure occurs. The classification of the network components according to the alarm signals they generate enables a formalization of the alarm-filtering problem and results in an efficient algorithm for localizing the failure(s). This algorithm is applied to the WDM rings of the COBNET network [1] (COBNET is a European ACTS project) and to a meshed optical network with the ARPA2 topology.
Starting Page	235
Ending Page	255
Page Count	21
File Format	PDF
ISSN	1387974X
Journal	Photonic Network Communications
Volume Number	1
Issue Number	3
e-ISSN	15728188
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1999-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Characterization and Evaluation Materials Computer Communication Networks Electronic and Computer Engineering
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Computer Networks and Communications Electrical and Electronic Engineering Hardware and Architecture Software

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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