A Framework for Enhanced Virtual Private Networks (VPN+) Service
draft-ietf-teas-enhanced-vpn-06

Document Type Active Internet-Draft (teas WG)
Last updated 2020-07-13
Replaces draft-dong-teas-enhanced-vpn
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TEAS Working Group                                               J. Dong
Internet-Draft                                                    Huawei
Intended status: Informational                                 S. Bryant
Expires: January 14, 2021                                      Futurewei
                                                                   Z. Li
                                                            China Mobile
                                                             T. Miyasaka
                                                        KDDI Corporation
                                                                  Y. Lee
                                                                 Samsung
                                                           July 13, 2020

    A Framework for Enhanced Virtual Private Networks (VPN+) Service
                    draft-ietf-teas-enhanced-vpn-06

Abstract

   This document describes the framework for Enhanced Virtual Private
   Network (VPN+) service.  The purpose is to support the needs of new
   applications, particularly applications that are associated with 5G
   services, by utilizing an approach that is based on existing VPN and
   Traffic Engineering (TE) technologies and adds features that specific
   services require over and above traditional VPNs.

   Typically, VPN+ will be used to form the underpinning of network
   slicing, but could also be of use in its own right providing enhanced
   connectivity services between customer sites.

   It is envisaged that enhanced VPNs will be delivered using a
   combination of existing, modified, and new networking technologies.
   This document provides an overview of relevant technologies and
   identifies some areas for potential new work.

   Comparing to traditional VPNs, It is not envisaged that quite large
   numbers of VPN+ services will be deployed in a network.  In other
   word, it is not intended that all existing VPNs supported by a
   network will use VPN+ related techniques.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

Dong, et al.            Expires January 14, 2021                [Page 1]
Internet-Draft               VPN+ Framework                    July 2020

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on January 14, 2021.

Copyright Notice

   Copyright (c) 2020 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
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminologies . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Overview of the Requirements  . . . . . . . . . . . . . . . .   6
     3.1.  Isolation between Enhanced VPN Services . . . . . . . . .   6
       3.1.1.  A Pragmatic Approach to Isolation . . . . . . . . . .   8
     3.2.  Performance Guarantee . . . . . . . . . . . . . . . . . .   9
     3.3.  Integration . . . . . . . . . . . . . . . . . . . . . . .  10
       3.3.1.  Abstraction . . . . . . . . . . . . . . . . . . . . .  11
     3.4.  Dynamic Management  . . . . . . . . . . . . . . . . . . .  11
     3.5.  Customized Control  . . . . . . . . . . . . . . . . . . .  12
     3.6.  Applicability . . . . . . . . . . . . . . . . . . . . . .  12
     3.7.  Inter-Domain and Inter-Layer Network  . . . . . . . . . .  12
   4.  Architecture of Enhanced VPN  . . . . . . . . . . . . . . . .  13
     4.1.  Layered Architecture  . . . . . . . . . . . . . . . . . .  14
     4.2.  Multi-Point to Multi-Point (MP2MP) Connectivity . . . . .  17
     4.3.  Application Specific Network Types  . . . . . . . . . . .  17
     4.4.  Scaling Considerations  . . . . . . . . . . . . . . . . .  17
   5.  Candidate Technologies  . . . . . . . . . . . . . . . . . . .  18
     5.1.  Layer-Two Data Plane  . . . . . . . . . . . . . . . . . .  18
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