while this was justified in the pas

while this was justified in the past, this does not hold in the future because of the foreseen traffic increase. core networks,including backbones and data centers, are expected to witness the biggest increase in electricity consumption in the future since their energy consumption is increasing almost proportionally to the traffic with an exponential traffic growth between 20% and 40% per year, the energy consumption in the core segment will soon become an issue if business grows as usual. thus trend partners have joined their efforts to propose and evaluate solutions to improve the network energy effciency.