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Status:

INFORMATIONAL

Authors:

CJ. Bernardos
A. Rahman
JC. Zuniga
LM. Contreras
P. Aranda
P. Lynch

Stream:

IRTF

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DOI:  https://doi.org/10.17487/RFC8568

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Abstract

This document describes open research challenges for networkvirtualization. Network virtualization is following a similar pathas previously taken by cloud computing. Specifically, cloudcomputing popularized migration of computing functions (e.g.,applications) and storage from local, dedicated, physical resourcesto remote virtual functions accessible through the Internet. In asimilar manner, network virtualization is encouraging migration ofnetworking functions from dedicated physical hardware nodes to avirtualized pool of resources. However, network virtualization canbe considered to be a more complex problem than cloud computing as itnot only involves virtualization of computing and storage functionsbut also involves abstraction of the network itself. This documentdescribes current research and engineering challenges in networkvirtualization including the guarantee of quality of service,performance improvement, support for multiple domains, networkslicing, service composition, device virtualization, privacy andsecurity, separation of control concerns, network function placement,and testing. In addition, some proposals are made for new activitiesin the IETF and IRTF that could address some of these challenges.This document is a product of the Network Function VirtualizationResearch Group (NFVRG).

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.