Global state, local decisions: Decentralized NFV for ISPs via enhanced SDN
| Autor: | Sharon Barkai, Albert Cabellos-Aparicio, Vina Ermagan, Gideon Kaempfer, Ajay Sahai, Fabio Maino, Ariel Noy, Alberto Rodriguez-Natal |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors, Universitat Politècnica de Catalunya. CBA - Sistemes de Comunicacions i Arquitectures de Banda Ampla |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Computer Networks and Communications
Computer science Distributed computing 02 engineering and technology Computer networks -- Scalability computer.software_genre Decentralization Virtualisation Bottleneck Proveïdors d'accés a Internet Software defined networking Telecomunicació -- Tràfic -- Gestió Internet service providers 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Virtual network Informàtica::Arquitectura de computadors [Àrees temàtiques de la UPC] Internet business.industry 020206 networking & telecommunications Telecommunication -- Traffic -- Management Virtualization Computer Science Applications Telecommunication traffic Scalability Benchmark (computing) 020201 artificial intelligence & image processing The Internet business Software-defined networking computer Computer network |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Recercat. Dipósit de la Recerca de Catalunya instname |
| Popis: | The network functions virtualization paradigm is rapidly gaining interest among Internet service providers. However, the transition to this paradigm on ISP networks comes with a unique set of challenges: legacy equipment already in place, heterogeneous traffic from multiple clients, and very large scalability requirements. In this article we thoroughly analyze such challenges and discuss NFV design guidelines that address them efficiently. Particularly, we show that a decentralization of NFV control while maintaining global state improves scalability, offers better per-flow decisions and simplifies the implementation of virtual network functions. Building on top of such principles, we propose a partially decentralized NFV architecture enabled via an enhanced software-defined networking infrastructure. We also perform a qualitative analysis of the architecture to identify advantages and challenges. Finally, we determine the bottleneck component, based on the qualitative analysis, which we implement and benchmark in order to assess the feasibility of the architecture. |
| Databáze: | OpenAIRE |
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