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GMPLS-Based Multiple Failure Recovery Employing Restoration Scheme Escalation in Optical Path Networks

Yoshiaki SONE, Wataru IMAJUKU, Naohide NAGATSU, Masahiko JINNO

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Summary :

Bolstering survivable backbone networks against multiple failures is becoming a common concern among telecom companies that need to continue services even when disasters occur. This paper presents a multiple-failure recovery scheme that considers the operation and management of optical paths. The presented scheme employs scheme escalation from pre-planned restoration to full rerouting. First, the survivability of this scheme against multiple failures is evaluated considering operational constraints such as route selection, resource allocation, and the recovery order of failed paths. The evaluation results show that scheme escalation provides a high level of survivability even under operational constraints, and this paper quantitatively clarifies the impact of these various operational constraints. In addition, the fundamental functions of the scheme escalation are implemented in the Generalized Multi-Protocol Label Switching control plane and verified in an optical-cross-connect-based network.

Publication
IEICE TRANSACTIONS on Communications Vol.E92-B No.1 pp.46-58
Publication Date
2009/01/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E92.B.46
Type of Manuscript
Special Section PAPER (Special Section on Networking Technologies for Dependable Networks)
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