Considerations on Network Virtualization and Slicing
draft-arkko-arch-virtualization-00

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Internet Engineering Task Force                                 J. Arkko
Internet-Draft                                                  Ericsson
Intended status: Informational                               J. Tantsura
Expires: May 20, 2018                         Futurewei, Future Networks
                                                              J. Halpern
                                                                B. Varga
                                                                Ericsson
                                                       November 16, 2017

          Considerations on Network Virtualization and Slicing
                  draft-arkko-arch-virtualization-00.txt

Abstract

   This document makes some observations on the effects virtualization
   on Internet architecture, as well as provides some guidelines for
   further work at the IETF relating to virtualization.

   This document also provides a summary of IETF technologies that
   relate to network virtualization.  An understanding of what current
   technologies there exist and what they can or cannot do is the first
   step in developing plans for possible extensions.

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
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   This Internet-Draft will expire on May 20, 2018.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents

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   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Definitions . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  General Observations  . . . . . . . . . . . . . . . . . . . .   4
   4.  Overview of IETF Virtualization Technologies  . . . . . . . .   5
     4.1.  Lower layers  . . . . . . . . . . . . . . . . . . . . . .   5
     4.2.  Traffic Separation in VPNs  . . . . . . . . . . . . . . .   6
     4.3.  Traffic Engineering and QoS . . . . . . . . . . . . . . .   7
     4.4.  Service Chaining  . . . . . . . . . . . . . . . . . . . .   8
     4.5.  Management Frameworks and Data Models . . . . . . . . . .   8
   5.  Architectural Observations  . . . . . . . . . . . . . . . . .  10
   6.  Further Work  . . . . . . . . . . . . . . . . . . . . . . . .  12
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  14
   8.  Informative References  . . . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   Network virtualization is network management pertaining to treating
   different traffic categories in separate virtual networks, with
   independent lifecycle management and resource, technology, and
   topology choices.

   This document makes some observations on the effects virtualization
   on Internet architecture, as well as provides some guidelines for
   further work at the IETF relating to virtualization.

   This document also provides a summary of IETF technologies that
   relate to network virtualization.  An understanding of what current
   technologies there exist and what they can or cannot do is the first
   step in developing plans for possible extensions.

   In particular, many IETF discussions earlier in the summer of 2017
   started from a top-down view of new virtualization technologies, but
   were often unable to explain the necessary delta to the wealth of
   existing IETF technology in this space.  This document takes a
   different, bottom-up approach to the topic and attempts to document
   existing technology, and then identify areas of needed development.

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