Carrying Virtual Transport Network (VTN) Identifier in IPv6 Extensison Header for Enhanced VPN
draft-dong-6man-enhanced-vpn-vtn-id-00

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6MAN working group                                            J. Dong 
Internet-Draft                                                  Z. Li 
Intended status: Standard Track                                Huawei 
Expires: August 2020                                February 10, 2020                                   
                                                  
                                                                      
                                                                      
                                      
        Carrying Virtual Transport Network (VTN) Identifier in IPv6 
                    Extensison Header for Enhanced VPN 
                                      
                  draft-dong-6man-enhanced-vpn-vtn-id-00 

Abstract 

   This document proposes a new option type to carry virtual transport 
   network identifier (VTN ID) in the IPv6 extensions headers to 
   identify the virtual transport network the packet belongs to. The 
   procedure of processing the VTN option is also specified. This 
   provides a scalable solution for data plane encapsulation of 
   enhanced VPN (VPN+) as described in I-D.ietf-teas-enhanced-vpn. One 
   typical use case of VPN+ is to provide transport network slicing in 
   5G, while it could also be used in more general cases. 

Status of This Memo 

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   This Internet-Draft will expire on August 10, 2020. 

Copyright Notice 

   Copyright (c) 2020 IETF Trust and the persons identified as the 
   document authors. All rights reserved. 

 
 
 
Dong, et al.           Expires August 10, 2020                [Page 1] 


Internet-Draft             IPv6 VTN Option               February 2020 
    

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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 ............................ 5 
   5. Security Considerations ..................................... 5 
   IANA Considerations ............................................ 5 
   Contributors ................................................... 6 
   Acknowledgments ................................................ 6 
   References ..................................................... 6 
      Normative References ........................................ 6 
      Informative References ...................................... 6 
   Authors' Addresses ............................................. 7 
    
1. Introduction 

   Virtual private networks (VPNs) have served the industry well as a 
   means of providing different groups of users with logically isolated 
   connectivity over a common network.  Some customers may request a 
   connectivity services with advanced characteristics such as complete 
   isolation from other services or guaranteed performance. These 
   services are "enhanced VPNs" (known as VPN+). [I-D.ietf-teas-
   enhanced-vpn] describes the framework and candidate component 
   technologies for providing enhanced VPN services. One typical use 
   case of VPN+ is to provide transport network slicing in 5G, while it 
   could also be used in more general cases. 

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