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Efficient multi-layer operational strategies for survivable IP-over-WDM networks

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3 Author(s)
Ratnam, K. ; Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore ; Luying Zhou ; Gurusamy, M.

This paper addresses the problem of achieving a balance in satisfying a network service provider's requirements: maintaining an acceptable call acceptance rate, satisfying protection requirements of requests, and controlling the signaling overhead in case of a component failure, in IP-over-WDM networks in a dynamic traffic arrival scenario. Satisfying all these aspects is a difficult task especially when the traffic pattern is dynamic in nature and a single layer protection approach is followed. In this work, first we propose a multi-layer protection scheme for achieving a better and acceptable tradeoff between blocking performance and signaling overhead in IP-over-WDM networks. We define various operational settings in the proposed scheme and investigate their impacts on the performance of the scheme. An important feature of this scheme is that, these settings allow a network service provider to select a suitable operational strategy for achieving the desired tradeoff based on network's policy and traffic demand. Then we propose an adaptive protection approach for dynamic traffic in consideration of providing better protection to requests as much as possible while considering blocking performance and signaling overhead. Through simulation experiments we evaluate the performance of the proposals and demonstrate their effectiveness

Published in:

Selected Areas in Communications, IEEE Journal on  (Volume:24 ,  Issue: 8 )

Date of Publication:

Aug. 2006

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