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2 Journal of Telecommunications and Information Technology

2 2007

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Traffic splitting in MPLS networks - a hierarchical multicriteria approach

Craveirinha J. M. F., Cli'maco J. C. N., Pascoal M. M. B., Martins L. M. R. A.

Journal of Telecommunications and Information Technology

2007

nr 4

3-10

In this paper we address a new hierarchical multicriteria routing model associated with a two-path traffic splitting routing method in MPLS networks whereby the bandwidth required by a given node-to-node traffic flow is divided by two disjoint paths. The model has two levels of objective functions and several constraints. An algorithmic approach is presented for calculating non-dominated solutions and selecting good compromise solutions to this problem. Also a number of computational experiments are presented.

A note on the computation of ordered supported non-dominated solutions in the bi-criteria minimum spanning tree problems

Silva C. G., Cli'maco J. C. N.

Journal of Telecommunications and Information Technology

2007

nr 4

11-15

This paper presents a new procedure for computing the set of supported non dominated solutions of bi-criteria minimum spanning tree problems in ordered manner. The procedure is based on the systematic detection of edges which must be replaced in one efficient solution to obtain the adjacent one, in the criteria space. This new approach avoids solving unnecessary problems and makes use of previous computations.