Energy-Efficient Service Function Chain Provisioning

Nicolas Huin 1 Andrea Tomassilli 1 Frédéric Giroire 1 Brigitte Jaumard 2
1 COATI - Combinatorics, Optimization and Algorithms for Telecommunications
CRISAM - Inria Sophia Antipolis - Méditerranée , Laboratoire I3S - COMRED - COMmunications, Réseaux, systèmes Embarqués et Distribués
Abstract : Network Function Virtualization (NFV) is a promising network architecture concept to reduce operational costs. In legacy networks, network functions, such as firewall or TCP optimization, are performed by specific hardware. In networks enabling NFV coupled with the Software Defined Network (SDN) paradigm, network functions can be implemented dynamically on generic hardware. This is of primary interest to implement energy efficient solutions, in order to adapt dynamically the resource usage to the demands. In this paper, we study how to use NFV coupled with SDN to improve the energy efficiency of networks. We consider a setting in which a flow has to go through a Service Function Chain, that is several network functions in a specific order. We propose a decomposition model that relies on chaining and function placement configurations to solve the problem. We show that virtualization allows to obtain between 15% to 62 % of energy savings for networks of different sizes.
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Nicolas Huin, Andrea Tomassilli, Frédéric Giroire, Brigitte Jaumard. Energy-Efficient Service Function Chain Provisioning. International Network Optimization Conference 2017, Feb 2017, Lisbonne, Portugal. ⟨hal-01513747⟩

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