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Energy-aware traffic engineering (ETE) has been gaining increasing research attentions due to the cost reduction benefits that it can offer to network operators and for environmental reasons. While numerous approaches exist which attempt to provide energy reduction benefits by intelligently manipulating network devices and their configurations, most of them suffer from one fundamental shortcoming:...
This paper proposes a methodology for resource consolidation towards minimizing the power consumption in a large network, with a substantial resource overprovisioning. The focus is on the operation of the core MPLS networks. The proposed approach is based on a software defined networking (SDN) scheme with a reconfigurable centralized controller, which turns off certain network elements. The methodology...
Backbone network energy efficiency has recently become a primary concern for Internet Service Providers and regulators. The common solutions for energy conservation in such an environment include sleep mode reconfigurations and rate adaptation at network devices when the traffic volume is low. It has been observed that many ISP networks exhibit regular traffic dynamicity patterns which can be exploited...
We introduce a practical green traffic engineering technique in fast reroute (FRR) enabled IP networks which is able to avoid transient routing disruption caused by sleeping-mode reconfigurations during runtime. Following the description on the time-driven "delegate before sleep" operations based on the NotVia FRR platform, we also propose a simple optimization algorithm for selecting sleeping...
One of the main challenges in the Future Internet era will be the increase of QoS-demanding applications that need to be supported. Unavoidably, this will lead to increased traffic that has to be served by the deployed networks. Moreover, the energy consumption and the configuration/management complexity will be significantly increased, too. Current network infrastructures and their associated management...
To construct energy optimal Internet, a new traffic engineering concept aggregating traffic into specific links and dynamically powering off interfaces of routers/switches should be introduced. This paper proposes a network topology design algorithm and examines link power management.
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