Rumley, SebastienGaumier, Christian2015-05-072015-05-072015-05-072011https://infoscience.epfl.ch/handle/20.500.14299/113744The electrical consumption of the core global networks is becoming preoccupant. To reduce it, one may bet on technological advances improving the energetic profile of individual components. However, large energy savings can potentially already be achieved, by reviewing the organization of the core networks. In this paper, we sketch directions which can be followed to improve the network organization toward reduced energetic consumption.energy efficient networkingmulti-layer optimizationoptical networkstext::conference output::conference proceedings::conference paper