2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577) 2004
DOI: 10.1109/icc.2004.1312857
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Enhancing fault management performance of two-step QoS routing algorithms in GMPLS networks

Abstract: Abstract-In this paper a novel methodology aimed at minimizing the probability of network failure and the failure impact (in terms of QoS degradation) while optimizing the resource consumption is introduced. A detailed study of MPLS recovery techniques and their GMPLS extensions are also presented. In this scenario, some features for reducing the failure impact and offering minimum failure probabilities at the same time are also analyzed. Novel two-step routing algorithms using this methodology are proposed. R… Show more

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Cited by 8 publications
(19 citation statements)
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“…Providing differentiated failure handling can be based not only on the service type but on other factors as well. Correlation between the impact of a failure and the position of a failed link on the path is made in [3] and a novel routing mechanism which improves the availability of the established connections is proposed. Unlike most of the research work in the area of differentiated reliability the work presented in this paper focuses on multi-domain link failure scenarios due to the specific implications that the multi-domain environment pose on the reliability mechanisms.…”
Section: Introductionmentioning
confidence: 99%
“…Providing differentiated failure handling can be based not only on the service type but on other factors as well. Correlation between the impact of a failure and the position of a failed link on the path is made in [3] and a novel routing mechanism which improves the availability of the established connections is proposed. Unlike most of the research work in the area of differentiated reliability the work presented in this paper focuses on multi-domain link failure scenarios due to the specific implications that the multi-domain environment pose on the reliability mechanisms.…”
Section: Introductionmentioning
confidence: 99%
“…Both optical and MPLS layers deploy their own fault management methods. However, some of the current recovery methods, such as [3,4,5], are only applied to a specific layer. On the other hand, fault management can be offered at link or node level.…”
Section: Introductionmentioning
confidence: 99%
“…Since resources are not shared in dedicated protection, there is poor resource utilization. Shared protection outperforms dedicated protection in terms of resource consumption but, in order to provide efficient resource consumption, the WP links must be known before BP computation [5]. Therefore, a two-step routing algorithm is necessary when shared protection is used.…”
mentioning
confidence: 99%
“…the time required to notify the fault from the node detecting the failure and the node responsible for the switchover. Notification time is probably one of the main aspects to be reduced in order to minimize the fault recovery time and offer faster protection [5]. In the case of local protection, the notification time is 0, since the node that detects the failure is also responsible for the traffic switchover.…”
mentioning
confidence: 99%
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