W. Miao, S. Peng, S. Spadaro, G. Bernini, F. Agraz, A. Ferrer, J. Perelló, G. Zervas, R. Nejabati, N. Ciulli, D. Simeonidou, H.J.S. Dorren, N. Calabretta, “Demonstration of Reconfigurable Virtual Data Center Networks Enabled by OPS with QoS Guarantees ”, to be presented at ECOC 2014, Cannes, France, September 21-26, 2014.