Energy-efficient service function chain provisioning

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) par...

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Bibliographic Details
Published inJournal of optical communications and networking Vol. 10; no. 3; pp. 114 - 124
Main Authors Huin, Nicolas, Tomassilli, Andrea, Giroire, Frederic, Jaumard, Brigitte
Format Journal Article
LanguageEnglish
Published Piscataway Optica Publishing Group 01.03.2018
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Piscataway, NJ ; Washington, DC : IEEE : Optical Society of America
Subjects
Bandwidth
Chains
Column generation; Energy efficiency;Network function virtualization; Network optimization;Service functions chains; Software defined networks
Computer Science
Energy consumption
Energy efficiency
Firewalls (computing)
Hardware
Integer programming
Linear programming
Networking and Internet Architecture
Optimization
Provisioning
Routing
Virtual networks
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Summary: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, virtual network functions (VNFs) can be implemented dynamically on generic hardware. This is of primary interest to implement energy-efficient solutions, in order to adapt the resource usage dynamically to the demand. In this paper, we study how to use NFV coupled with an SDN to improve the energy efficiency of networks.We consider a setting inwhich a flowhas to go through a service function chain, which is several network functions in a specific order.We propose an integer linear programming (ILP) formulation, an ILP-based heuristic, and a decomposition model that relies on joint routing and placement configuration to solve the problem. We show that virtualization provides between 22% and 62% of energy savings for networks of different sizes.
ISSN:1943-0620
1943-0639
DOI:10.1364/JOCN.10.000114