Multi-domain Network Virtualization
draft-bernardos-nfvrg-multidomain-03

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NFV RG                                                     CJ. Bernardos
Internet-Draft                                                      UC3M
Intended status: Informational                             LM. Contreras
Expires: March 14, 2018                                              TID
                                                            I. Vaishnavi
                                                                  Huawei
                                                                R. Szabo
                                                                Ericsson
                                                      September 10, 2017

                  Multi-domain Network Virtualization
                  draft-bernardos-nfvrg-multidomain-03

Abstract

   This draft analyzes the problem of multi-provider multi-domain
   orchestration, by first scoping the problem, then looking into
   potential architectural approaches, and finally describing the
   solutions being developed by the European 5GEx project.

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
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   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on March 14, 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
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   (http://trustee.ietf.org/license-info) in effect on the date of
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   carefully, as they describe your rights and restrictions with respect

Bernardos, et al.        Expires March 14, 2018                 [Page 1]
Internet-Draft     Multi-domain Network Virtualization    September 2017

   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Background: the ETSI NFV
       architecture  . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Multidomain problem statement . . . . . . . . . . . . . . . .   6
   5.  Multi-domain architectural approaches . . . . . . . . . . . .   7
     5.1.  ETSI NFV approaches . . . . . . . . . . . . . . . . . . .   8
     5.2.  Hierarchical  . . . . . . . . . . . . . . . . . . . . . .  11
     5.3.  Cascading . . . . . . . . . . . . . . . . . . . . . . . .  13
   6.  Virtualization and Control for
       Multi-Provider Multi-Domain . . . . . . . . . . . . . . . . .  13
     6.1.  Interworking interfaces . . . . . . . . . . . . . . . . .  15
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  16
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
   9.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  16
   10. Informative References  . . . . . . . . . . . . . . . . . . .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   The telecommunications sector is experiencing a major revolution that
   will shape the way networks and services are designed and deployed
   for the next decade.  We are witnessing an explosion in the number of
   applications and services demanded by users, which are now really
   capable of accessing them on the move.  In order to cope with such a
   demand, some network operators are looking at the cloud computing
   paradigm, which enables a potential reduction of the overall costs by
   outsourcing communication services from specific hardware in the
   operator's core to server farms scattered in datacenters.  These
   services have different characteristics if compared with conventional
   IT services that have to be taken into account in this cloudification
   process.  Also the transport network is affected in that it is
   evolving to a more sophisticated form of IP architecture with trends
   like separation of control and data plane traffic, and more fine-
   grained forwarding of packets (beyond looking at the destination IP
   address) in the network to fulfill new business and service goals.

   Virtualization of functions also provides operators with tools to
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