Network Virtualization Research Challenges
draft-irtf-nfvrg-gaps-network-virtualization-06

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Last updated 2017-07-03
Replaces draft-bernardos-nfvrg-gaps-network-virtualization
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NFVRG                                                      CJ. Bernardos
Internet-Draft                                                      UC3M
Intended status: Informational                                 A. Rahman
Expires: January 4, 2018                                    InterDigital
                                                              JC. Zuniga
                                                                  SIGFOX
                                                           LM. Contreras
                                                                     TID
                                                               P. Aranda
                                                                    UC3M
                                                                P. Lynch
                                                                    Ixia
                                                            July 3, 2017

               Network Virtualization Research Challenges
            draft-irtf-nfvrg-gaps-network-virtualization-06

Abstract

   This document describes open research challenges for network
   virtualization.  Network virtualization is following a similar path
   as previously taken by cloud computing.  Specifically, cloud
   computing popularized migration of computing functions (e.g.,
   applications) and storage from local, dedicated, physical resources
   to remote virtual functions accessible through the Internet.  In a
   similar manner, network virtualization is encouraging migration of
   networking functions from dedicated physical hardware nodes to a
   virtualized pool of resources.  However, network virtualization can
   be considered to be a more complex problem than cloud computing as it
   not only involves virtualization of computing and storage functions
   but also involves abstraction of the network itself.  This document
   describes current research challenges in network virtualization
   including guaranteeing quality-of-service, performance improvement,
   supporting multiple domains, network slicing, service composition,
   device virtualization, privacy and security, separation of control
   concerns, network function placement and testing.  In addition, some
   proposals are made for new activities in IETF/IRTF that could address
   some of these challenges.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute

Bernardos, et al.        Expires January 4, 2018                [Page 1]
Internet-Draft Network Virtualization Research Challenges      July 2017

   working documents as Internet-Drafts.  The list of current Internet-
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   This Internet-Draft will expire on January 4, 2018.

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   Copyright (c) 2017 IETF Trust and the persons identified as the
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Background  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  Network Function Virtualization . . . . . . . . . . . . .   5
     3.2.  Software Defined Networking . . . . . . . . . . . . . . .   7
     3.3.  ITU-T functional architecture of SDN  . . . . . . . . . .  12
     3.4.  Multi-access Edge Computing . . . . . . . . . . . . . . .  13
     3.5.  IEEE 802.1CF (OmniRAN)  . . . . . . . . . . . . . . . . .  14
     3.6.  Distributed Management Task Force . . . . . . . . . . . .  14
     3.7.  Open Source initiatives . . . . . . . . . . . . . . . . .  14
   4.  Network Virtualization Challenges . . . . . . . . . . . . . .  16
     4.1.  Introduction  . . . . . . . . . . . . . . . . . . . . . .  16
     4.2.  Guaranteeing quality-of-service . . . . . . . . . . . . .  16
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