Abstract
In this paper we consider a multilayer architecture: IP-MPLS over optical transport networks (OTNs). Nodes have integrated functionality of optical cross connects (OXCs) in the optical layer and of IP routers in the IP layer. Any two IP routers can be connected together by an all-optical wavelength-division multiplexing (WDM) channel, called a lightpath. Wavelength converters may be installed in each node. We propose a class-based method providing fast service restoration and reducing the number of service recovery actions in the IP layer. We focus on service restoration time values and we show, that it is possible to decrease them, by reducing the size of active path protected area. This may be achieved for the price of link capacity utilization degradation.
This work was partially supported by the Ministry of Science and Higher Education, Poland, under grants 3 T11D 001 30 and N517Â 022 32/3969.
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Molisz, W., Rak, J. (2008). A Novel Class-Based Protection Algorithm Providing Fast Service Recovery in IP/WDM Networks. In: Das, A., Pung, H.K., Lee, F.B.S., Wong, L.W.C. (eds) NETWORKING 2008 Ad Hoc and Sensor Networks, Wireless Networks, Next Generation Internet. NETWORKING 2008. Lecture Notes in Computer Science, vol 4982. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-79549-0_29
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DOI: https://doi.org/10.1007/978-3-540-79549-0_29
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