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IP over WDM is a promising architecture for the next generation Internet (NGI) backbones. Traffic engineering (TE) for next generation multimedia services is a new challenge for multilayer co-operation within these communication networks. In MPLS/GMPLS based IP over WDM networks, the TE process is accomplished by the establishment of an adequate logical topology, above the underlying optical topology...
In this paper, we propose an effective upgrading algorithm in incremental planning for optical networks. This algorithm integrates making full use of existent available resource with upgrading capacity. Our objective is to minimize the newly added resource in the network. The Integer Linear Programming (ILP) formulation is presented. Since the ILP formulation is not adapted for large-scale network,...
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