Network flows: theory, algorithms, and applications
Network flows: theory, algorithms, and applications
Computers and Intractability: A Guide to the Theory of NP-Completeness
Computers and Intractability: A Guide to the Theory of NP-Completeness
Routing Through Virtual Paths in Layered Telecommunication Networks
Operations Research
Fast accurate computation of large-scale IP traffic matrices from link loads
SIGMETRICS '03 Proceedings of the 2003 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Proceedings of the 2003 conference on Applications, technologies, architectures, and protocols for computer communications
Routing, Flow, and Capacity Design in Communication and Computer Networks
Routing, Flow, and Capacity Design in Communication and Computer Networks
The role of stochastic programming in communication network design
Computers and Operations Research
Providing public intradomain traffic matrices to the research community
ACM SIGCOMM Computer Communication Review
COPE: traffic engineering in dynamic networks
Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
Multi-layer MPLS network design: The impact of statistical multiplexing
Computer Networks: The International Journal of Computer and Telecommunications Networking
Energy-aware traffic engineering
Proceedings of the 1st International Conference on Energy-Efficient Computing and Networking
Energy efficiency and CAPEX minimization for backbone network planning: is there a tradeoff?
ANTS'09 Proceedings of the 3rd international conference on Advanced networks and telecommunication systems
Power efficient traffic grooming in optical WDM networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Reducing power consumption in backbone networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Power-efficient multi-layer networking: design and evaluation
ONDM'10 Proceedings of the 14th conference on Optical network design and modeling
Saving energy in IP-over-WDM networks by switching off line cards in low-demand scenarios
ONDM'10 Proceedings of the 14th conference on Optical network design and modeling
Greening backbone networks: reducing energy consumption by shutting off cables in bundled links
Proceedings of the first ACM SIGCOMM workshop on Green networking
INFORMS Journal on Computing
An improved Benders decomposition applied to a multi-layer network design problem
Operations Research Letters
Optimal design of green multi-layer core networks
Proceedings of the 3rd International Conference on Future Energy Systems: Where Energy, Computing and Communication Meet
Multi-granularity and robust grooming in power- and port-cost-efficient IP over WDM networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Dynamic hybrid grooming based on power efficiency in green IP over WDM networks
Photonic Network Communications
The Journal of Supercomputing
Survivable power efficiency oriented integrated grooming in green networks
Journal of Network and Computer Applications
Computer Networks: The International Journal of Computer and Telecommunications Networking
Journal of Parallel and Distributed Computing
Sleep modes effectiveness in backbone networks with limited configurations
Computer Networks: The International Journal of Computer and Telecommunications Networking
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We estimate potential energy savings in IP-over-WDM networks achieved by switching off router line cards in low-demand hours. We compare three approaches to react on dynamics in the IP traffic over time, Fufl, Dufl and Dudl. They provide different levels of freedom in adjusting the routing of lightpaths in the WDM layer and the routing of demands in the IP layer. Using MILP models based on three realistic network topologies as well as realistic demands, power, and cost values, we show that already a simple monitoring of the lightpath utilization in order to deactivate empty line cards (Fufl) may bring substantial benefits. The most significant savings, however, are achieved by rerouting traffic in the IP layer (Dufl). A sophisticated reoptimization of the virtual topology and the routing in the optical and electrical domains for every demand scenario (Dudl) yields nearly no additional profits in the considered networks. These results are independent of the ratio between the traffic demands and capacity granularity, the time scale, distribution of demands, and the network topology for Dufl and Dudl. The success of Fufl, however, depends on the spatial distribution of the traffic as well as on the ratio of traffic demands and lightpath capacity.