Cost-Efficient Virtual Optical Network Embedding for Manageable Inter-Data-Center Connectivity
Jordi Perelló, Pablo Pavón‐Mariño, Salvatore Spadaro · ETRI Journal · 2013
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%.