On fault recovery priority in ATM networks

Jæger, Bjørn; Tipper, David

doi:10.1109/icc.1998.683058

Cited by 7 publications

(11 citation statements)

References 8 publications

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“…In Ref. [13] we perform an initial investigation of prioritized dynamic restoration of virtual circuits. This paper extends the work of Jaeger and Tipper [13] by introducing a centralized path flow optimization problem formulation together with multiple workload combinations for centralized and distributed implementations.…”

Section: Introductionmentioning

confidence: 99%

Prioritized traffic restoration in connection oriented QoS based networks

Jæger

Tipper

2003

Computer Communications

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Connection oriented quality-of-service (QoS) based networks offer several service classes each designed to handle connections supporting various types of applications. A network failure will typically result in a large number of disrupted connections in each service class, all of which need to be restored simultaneously. In this paper we propose a distributed fault recovery priority scheme for dynamic restoration of connections. The proposed scheme exploits available network resources immediately after a failure together with properties of typical applications carried by the connections in order to give the applications sufficient network performance. The scheme is formulated within the context of switched virtual circuit routing in ATM networks, but it is applicable to ATM virtual path restoration as well and to other class based QoS networks like DiffServ MPLS based networks. The priority based restoration scheme is formulated as a centralized path flow integer programming optimization problem serving as a comparison benchmark for suboptimal distributed schemes. We propose a distributed heuristic scheme and give numerical results illustrating the quality of the proposed distributed scheme in comparison to the centralized optimal approach. Our numerical results show that the proposed distributed scheme can significantly improve utilization of network resources and enhance network performance after a failure. q

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Section: Introductionmentioning

confidence: 99%

Prioritized traffic restoration in connection oriented QoS based networks

Jæger

Tipper

2003

Computer Communications

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“…Our work on traffic restoration has concentrated on the development of algorithms for distributed dynamic traffic restoration to make optimum use of whatever resources are available after a failure, in support of critical services. Here we summarize some of our main results from [9,10,34,35].…”

Section: Traffic Restoration Proceduresmentioning

confidence: 88%

“…In [9,10], we propose a priority scheme for reconnection of virtual circuits (VCs) in ATM networks that have been disrupted by a failure. ATM networks offer several service categories each designed to handle applications with specific traffic characteristics.…”

Section: Atm Fault Recovery Prioritiesmentioning

confidence: 99%

“…In [10], we have developed a restoration priority scheme based in part on the ATM service classes, which aims at minimizing the impact of a failure on the network while providing users the best possible service. The scheme involves both a priority for reconnection among ATM service classes and a rule for ordering and routing VCs within a service class.…”

Section: Atm Fault Recovery Prioritiesmentioning

confidence: 99%

“…Ph.D. candidate William Yurcik developed the survivable ring approach to providing fault tolerant group communications detailed in [35] and his forthcoming Ph.D. dissertation. Visiting scholar Bjorn Jager has contributed to the development of fault recovery routing algorithms and priority restoration schemes as detailed in [34,10] and his forthcoming doctoral dissertation [9].…”

Section: University Of Pittsburghmentioning

confidence: 99%

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