III More efficient architecturesthe

III More efficient architectures
the previously presented solutions are based on hardware improvements and could be implemented in current networks provided that such capabilities are commercially available. A more disruptive vision rethinks the networks architectures in order to include the energy consumption as a given constraint or optimization goal in the design phase, New architectures can be implemented that change the traffic distribution in the network in such ways that important reduction in terms of consumption could be achieved either through an improvement of the efficiency or through a reduction of traffic volume