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dc.contributor.authorRodríguez Natal, Alberto
dc.contributor.authorErmagan, Vina
dc.contributor.authorNoy, Ariel
dc.contributor.authorSahai, Ajay
dc.contributor.authorKaempfer, Gideon
dc.contributor.authorBarkai, Sharon
dc.contributor.authorMaino, Fabio
dc.contributor.authorCabellos Aparicio, Alberto
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors
dc.identifier.citationRodriguez, A., Ermagan, V., Noy, A., Sahai, A., Kaempfer, G., Barkai, S., Maino, F., Cabellos-Aparicio, A. Global state, local decisions: Decentralized NFV for ISPs via enhanced SDN. "IEEE communications magazine", 14 Abril 2017, vol. 55, núm. 4, p. 87-93.
dc.description.abstractThe 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.
dc.format.extent7 p.
dc.subjectÀrees temàtiques de la UPC::Informàtica::Arquitectura de computadors
dc.subject.lcshInternet service providers
dc.subject.lcshTelecommunication -- Traffic -- Management
dc.subject.lcshComputer networks -- Scalability
dc.subject.otherSoftware defined networking
dc.subject.otherTelecommunication traffic
dc.titleGlobal state, local decisions: Decentralized NFV for ISPs via enhanced SDN
dc.subject.lemacProveïdors d'accés a Internet
dc.subject.lemacTelecomunicació -- Tràfic -- Gestió
dc.contributor.groupUniversitat Politècnica de Catalunya. CBA - Sistemes de Comunicacions i Arquitectures de Banda Ampla
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorRodriguez, A.; Ermagan, V.; Noy, A.; Sahai, A.; Kaempfer, G.; Barkai, S.; Maino, F.; Cabellos-Aparicio, A.
upcommons.citation.publicationNameIEEE communications magazine

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