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Service level agreement framework for differentiated survivability in GMPLS-based IP-over-optical networks

Harle, D.A. and Al-Barrak, S. and Ali, F. and Urra, A. and Calle, E. and Marzo, J. (2007) Service level agreement framework for differentiated survivability in GMPLS-based IP-over-optical networks. In: IEEE International Conference on Communications 2007, 2007-06-24 - 2007-06-28, Scottish Exhibition & Conference Centre (SECC).

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Abstract

In the next generation optical internet, GMPLS based IP-over-optical networks, ISPs will be required to support a wide variety of applications each having their own requirements. These requirements are contracted by means of the SLA. This paper describes a recovery framework that may be included in the SLA contract between ISP and customers in order to provide the required level of survivability. A key concern with such a recovery framework is how to present the different survivability alternatives including recovery techniques, failure scenario and layered integration into a transparent manner for customers. In this paper, two issues are investigated. First, the performance of the recovery framework when applying a proposed mapping procedure as an admission control mechanism in the edge router considering a smart-edge simple-core GMPLS-based IP/WDM network is considered. The second issue pertains to the performance of a pre-allocated restoration and its ability to provide protected connections under different failure scenarios.