IEEE/ACM Transactions on Networking (TON)
Proceedings of the 2003 conference on Applications, technologies, architectures, and protocols for computer communications
Optical WDM Networks (Optical Networks)
Optical WDM Networks (Optical Networks)
COPE: traffic engineering in dynamic networks
Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
Traffic grooming: a changing role in green optical networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Towards realistic physical topology models for internet backbone networks
HONET'09 Proceedings of the 6th international conference on High capacity optical networks and enabling technologies
Traffic grooming in an optical WDM mesh network
IEEE Journal on Selected Areas in Communications
Feasibility of IP restoration in a tier 1 backbone
IEEE Network: The Magazine of Global Internetworking
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Networking infrastructure consumes a sizable fraction of the electricity supply. A network design model aimed at maximizing energy savings by aggregating traffic demand at a small set of resources, to put under-utilized resources to sleep, is offset by legacy models aimed at maximizing the network throughput by spreading the load across network resources. Traffic fluctuations and sudden spikes further complicate the problem. In this paper, we show that the problem is NP-hard, and propose a heuristic which targets optimal power usage for common traffic demand, while accommodating traffic fluctuations. The efficacy of our design is tested on two published backbone networks: NLR and NSFNET. Simulation results reveal that the proposed heuristic closely matches the results of the optimal algorithm in both energy savings and network utilization, while enjoying polynomial time complexity.