Performance Evaluation of Impairment-Aware Routing Under Single- and Double-Link Failures

This work evaluates the performance of an impairment-aware routing (IAR) scheme in the presence of single- and dual-link failures. Network resilience is provided through a shared backup path protection scheme, enhanced with a reinforced sharing mechanism. The results indicate that the IAR scheme pro...

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Bibliographic Details
Published in:Journal of optical communications and networking 2010-08, Vol.2 (8), p.633-641
Main Authors: Georgakilas, Konstantinos N, Katrinis, Kostas, Tzanakaki, Anna, Madsen, Ole B
Format: Article
Language:English
Subjects:
Availability
Backup multiplexing
Computer networks
Double-link failures
Dual-link failures
Failure
Impairment
Information technology
Joints
Networks
Optical fiber networks
Optical losses
Optimized production technology
Performance evaluation
Protection
Resilience
Routing
Routing (telecommunications)
RWA
Shared backup path protection
Sharing
Simulation
Survivability
Wavelength division multiplexing
WDM networks
WDM optical networks
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Description
Summary:This work evaluates the performance of an impairment-aware routing (IAR) scheme in the presence of single- and dual-link failures. Network resilience is provided through a shared backup path protection scheme, enhanced with a reinforced sharing mechanism. The results indicate that the IAR scheme provides significantly lower connection blocking compared with traditional minimum-hop routing because physical impairments have a significant contribution to the overall network blocking probability. Dual-link failures are also considered, and the performance of a network designed to be resilient to single-link failures is evaluated. Simulation results show low connection loss rates due to dual failures that can be further improved using a restoration mechanism activated on the occurrence of dual failures.
ISSN:1943-0620
1943-0639
DOI:10.1364/JOCN.2.000633