Network virtualization opens the door to novel infrastructure services offering connectivity and node manageability. In this letter, we focus on the cost-efficient embedding of on-demand virtual optical network requests for interconnecting geographically distributed data centers. We present a mixed integer linear programming formulation that introduces flexibility in the virtual-physical node mapping to optimize the usage of the underlying physical resources. Illustrative results show that flexibility in the node mapping can reduce the number of add-drop ports required to serve the offered demands by 40%.
CitationPerello, J.; Spadaro, S.; Pavón, P. Cost-efficient virtual optical network embedding for manageable inter-data-center connectivity. "ETRI journal", Febrer 2013, vol. 35, núm. 1, p. 142-145.
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