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Waste of energy due to over-provisioning and overdimensioning
of network infrastructures has recently stimulated
the interest on energy consumption reduction by Internet Service
Providers (ISPs). By means of resource consolidation, network
virtualization based architectures will enable energy saving. In
this letter, we extend the well-known virtual network embedding
problem (VNE) to energy awareness and propose a mixed
integer program (MIP) which provides optimal energy efficient
embeddings. Simulation results show the energy gains of the
proposed MIP over the existing cost-based VNE approach.
CitacióBotero, J. [et al.]. Energy efficient virtual network embedding. "IEEE communications letters", Maig 2012, vol. 16, núm. 5, p. 756-759.