A comparison of SS7 congestion control options during mass call-in situations
IEEE/ACM Transactions on Networking (TON)
Virtual path routing for survivable ATM networks
IEEE/ACM Transactions on Networking (TON)
Survivability performance analysis of rerouting strategies in an ATM/VP DCS survivable mesh network
ACM SIGCOMM Computer Communication Review
Fault recovery for guaranteed performance communications connections
IEEE/ACM Transactions on Networking (TON)
The Effect of Detection and Restoration Times forError Recovery in Communication Networks
Journal of Network and Systems Management
Performance benchmarking of signaling in ATM networks
IEEE Communications Magazine
New options and insights for survivable transport networks
IEEE Communications Magazine
Improved survivability with multi-layer dynamic routing
IEEE Communications Magazine
Service applications for SONET DCS distributed restoration
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
An analysis of the congestion effects of link failures in wide area networks
IEEE Journal on Selected Areas in Communications
Approximating optimal spare capacity allocation by successive survivable routing
IEEE/ACM Transactions on Networking (TON)
Lagrangean heuristic for primary routes assignment in survivable connection-oriented networks
Computational Optimization and Applications
Effects of rerouting after service disruption in MPLS based networks
AIC'06 Proceedings of the 6th WSEAS International Conference on Applied Informatics and 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.