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2010 14th Conference on Optical Network Design and Modeling (ONDM)
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 realistic network topologies and node architectures as well as realistic demands, power, and cost values,doi:10.1109/ondm.2010.5431569 fatcat:bsavebzu35djdfzwsrkscp4vsa