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Resilient Overlay Design in DWDM Systems
Yugoslav journal of operations research, Tome 26 (2016) no. 3, p. 343 Cet article a éte moissonné depuis la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

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The goal of this work is to design a minimum cost resilient overlay network, where a data network is on top of a transport network. Two major challenges are addressed. On one hand, a single failure in the transport network causes multiple simultaneous failures; on the other, the multicommodity flow must respect integrality. An integer programming formulation is presented to design an overlay, meeting the previous constraints. We prove that the problem belongs to the class NP-Hard. Then, a decomposition approach is introduced, where the problem is solved in two steps by means of relaxations of the original formulation. Experiments carried out with real-life instances, coming from the Uruguayan telecommunication operator, show that the approach is competitive with respect to previous metaheuristics, to know, Tabu-Search (TS) and Variable Neighborhood Search (VNS). A modest percentage of cost-reduction is achieved in some instances, which means millionaire savings in practice.
Classification : 68M10, 90B10, 90C10
Keywords: Network Survivability, Network Optimization, Overlay. 
@article{YJOR_2016_26_3_a5,
     author = {Cecilia Parodi and Franco Robledo and Pablo Romero and Carlos E. Testuri},
     title = {Resilient {Overlay} {Design} in {DWDM} {Systems}},
     journal = {Yugoslav journal of operations research},
     pages = {343 },
     year = {2016},
     volume = {26},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/YJOR_2016_26_3_a5/}
}
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AU  - Franco Robledo
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AU  - Carlos E. Testuri
TI  - Resilient Overlay Design in DWDM Systems
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SP  - 343 
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%G en
%F YJOR_2016_26_3_a5
Cecilia Parodi; Franco Robledo; Pablo Romero; Carlos E. Testuri. Resilient Overlay Design in DWDM Systems. Yugoslav journal of operations research, Tome 26 (2016) no. 3, p. 343 . http://geodesic.mathdoc.fr/item/YJOR_2016_26_3_a5/