Carrying Virtual Transport Network Identifier in IPv6 Extension Header
draft-dong-6man-enhanced-vpn-vtn-id-02

Document Type Active Internet-Draft (individual)
Authors Jie Dong  , Zhenbin Li  , Chongfeng Xie  , Chenhao Ma 
Last updated 2020-11-02
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Network Working Group                                            J. Dong
Internet-Draft                                                     Z. Li
Intended status: Standards Track                     Huawei Technologies
Expires: May 6, 2021                                              C. Xie
                                                                   C. Ma
                                                           China Telecom
                                                        November 2, 2020

 Carrying Virtual Transport Network Identifier in IPv6 Extension Header
                 draft-dong-6man-enhanced-vpn-vtn-id-02

Abstract

   A Virtual Transport Network (VTN) is a virtual network which has a
   customized network topology and a set of dedicated or shared network
   resources allocated from the network infrastructure.  A VTN can be
   used as the underlay for one or a group of VPNs to provide enhanced
   VPN (VPN+) services.  In packet forwarding, some fields in data
   packet needs to be used to identify the VTN the packet belongs to, so
   that the VTN-specific processing can be performed.

   This document proposes a new option type to carry VTN ID in an IPv6
   extension headers to identify the Virtual Transport Network (VTN) the
   packet belongs to.  The procedure for processing of the VTN option is
   also specified.

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 6, 2021.

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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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  New IPv6 Extension Header Option for VTN  . . . . . . . . . .   3
   4.  Procedures  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     4.1.  VTN Option Insertion  . . . . . . . . . . . . . . . . . .   4
     4.2.  VTN based Packet Forwarding . . . . . . . . . . . . . . .   4
   5.  Operational Considerations  . . . . . . . . . . . . . . . . .   5
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   8.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .   6
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   6
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   6
     10.2.  Informative References . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   Virtual Private Networks (VPNs) provide different groups of users
   with logically isolated connectivity over a common shared network
   infrastructure.  With the introduction of 5G, new service types may
   require connectivity services with advanced characteristics comparing
   to traditional VPNs, such as strict isolation from other services or
   guaranteed performance.  These services are refered to as "enhanced
   VPNs" (VPN+).  [I-D.ietf-teas-enhanced-vpn] describes a framework and
   candidate component technologies for providing VPN+ services.

   The enhanced properties of VPN+ require tighter coordination and
   integration between the underlay network resources and the overlay
   network.  VPN+ service can be built on a Virtual Transport Network
   (VTN) which has a customized network topology and a set of dedicated

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