Hierarchical Restoration Scheme for Multiple Failures in GMPLS Networks

Authors:
Affiliations:
Venue:
ICPPW '02 Proceedings of the 2002 International Conference on Parallel Processing Workshops
Year:
2002

Citing 0
Cited 3

Two-stage EDA-based approach for all optical WDM mesh network survivability under SRLG constraints

Applied Soft Computing
A methodology of resilient MPLS/VPN path management under multiple link failures

ISCIS'05 Proceedings of the 20th international conference on Computer and Information Sciences
Fast restoration of resilience-guaranteed segments under multiple link failures in a general mesh-type MPLS/GMPLS network

ICOIN'06 Proceedings of the 2006 international conference on Information Networking: advances in Data Communications and Wireless Networks

Quantified Score

Hi-index	0.00

Visualization

Abstract

It is expected that GMPLS-based recovery could become a viable option for obtaining faster restoration than layer 3 rerouting. Even though dedicated restoration ensures restorability of connections, exclusive use of dedicated scheme would result in wasting network resources,especially in case of providing for multiple failures. A range of restoration schemes have been proposed that use the concept of sharing capacity to improve efficiency. However, the case of multiple simultaneous failures has not been considered. In this paper we propose a hierarchical scheme for handling multiple simultaneous failures, where hierarchical Shared Risk Link Groups (SRLGs) are applied. We also introduce Backup Group Multiplexing (BGM) into our hierarchical scheme to precipitate the restoration of multiple Label Switched Paths (LSPs) with failures all at once. Furthermore, the proposed scheme selects a backup path with enough resources to satisfy renegotiated Quality of Service (QoS) of each backup group, among M backup paths. Our simulation results demonstrate that our scheme utilizes bandwidth more efficiently through multiplexing gain.