Virtualização de Redes Ópticas Elásticas: Formulação Linear Considerando o Grooming de Tráfego

An Elastic Optical Network (EON) can be used as a transport technology for virtualization of optical networks. Two Mixed-Integer Linear Programming (MILP) formulations grooming and non-grooming approaches are proposed in this paper, to design EON networks for different Virtual Optical Networks (VON). The formulations use the concept of modulation format to guarantee efficiency in terms of bandwidth for a physical substrate subject to several virtual topologies. The proposed grooming approach jointly solves the multiple virtual topology design and physical topology design problems. On the other hand, the non-grooming approach solves only the physical topology design. It is shown that the grooming approach can provide good results, since it solves the problem for a complete design when compared to the design without grooming.