Centralized versus distributed re-provisioning in optical mesh networks

Authors:
Chadi Assi;Wei Huo;Abdallah Shami
Affiliations:
Concordia Institute for Information Systems Engineering, Concordia University;Concordia Institute for Information Systems Engineering, Concordia University;Department of Electrical and Computer Engineering, University of Western Ontario
Venue:
ICN'05 Proceedings of the 4th international conference on Networking - Volume Part I
Year:
2005

Citing 3
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IC3N '97 Proceedings of the 6th International Conference on Computer Communications and Networks
Mesh-based Survivable Transport Networks: Options and Strategies for Optical, MPLS, SONET and ATM Networking

Mesh-based Survivable Transport Networks: Options and Strategies for Optical, MPLS, SONET and ATM Networking
Availability analysis of span-restorable mesh networks

IEEE Journal on Selected Areas in Communications

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Abstract

Significant progress has been made towards making optical networks 100% restorable in the event of single link failures through protection schemes with preplanned spare capacity. Currently dual failures are considered not uncommon and finding shows that designs offering complete dual failures restorability require more than double the amount of spare capacity. In this paper, we study the impact of re-provisioning on improving the overall network robustness and we compare two different re-provisioning schemes under both centralized and distributed implementations. We show that under distributed implementation, network robustness degrades due to excessive contentions and accordingly we propose a solution to mitigate the impact of contentions. We evaluate the performance of our proposal through simulation experiments.