The China Education and Research Network (CERNET) IVI Translation Design and Deployment for the IPv4/IPv6 Coexistence and Transition
RFC 6219

 
Document Type RFC - Informational (May 2011; No errata)
Was draft-xli-behave-ivi (individual in int area)
Last updated 2013-03-02
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IESG IESG state RFC 6219 (Informational)
Telechat date
Responsible AD Jari Arkko
IESG note Document Shepherd is Fred Baker <fred@cisco.com>
Send notices to xing@cernet.edu.cn, jianping@cernet.edu.cn, mk@cernet.edu.cn, congxiao@cernet.edu.cn, neilzh@gmail.com, draft-xli-behave-ivi@ietf.org, magnus.westerlund@ericsson.com,behave-chairs@ietf.org
Internet Engineering Task Force (IETF)                             X. Li
Request for Comments: 6219                                        C. Bao
Category: Informational                                          M. Chen
ISSN: 2070-1721                                                 H. Zhang
                                                                   J. Wu
                                                  CERNET Center/Tsinghua
                                                              University
                                                                May 2011

   The China Education and Research Network (CERNET) IVI Translation
   Design and Deployment for the IPv4/IPv6 Coexistence and Transition

Abstract

   This document presents the China Education and Research Network
   (CERNET)'s IVI translation design and deployment for the IPv4/IPv6
   coexistence and transition.

   The IVI is a prefix-specific and stateless address mapping mechanism
   for "an IPv6 network to the IPv4 Internet" and "the IPv4 Internet to
   an IPv6 network" scenarios.  In the IVI design, subsets of the ISP's
   IPv4 addresses are embedded in the ISP's IPv6 addresses, and the
   hosts using these IPv6 addresses can therefore communicate with the
   global IPv6 Internet directly and can communicate with the global
   IPv4 Internet via stateless translators.  The communications can
   either be IPv6 initiated or IPv4 initiated.  The IVI mechanism
   supports the end-to-end address transparency and incremental
   deployment.  The IVI is an early design deployed in the CERNET as a
   reference for the IETF standard documents on IPv4/IPv6 stateless
   translation.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6219.

Li, et al.                    Informational                     [Page 1]
RFC 6219              CERNET IVI Translation Design             May 2011

Copyright Notice

   Copyright (c) 2011 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
   (http://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
      1.1. Analysis of IPv4-IPv6 Translation Mechanisms ...............3
      1.2. CERNET Translation Requirements ............................4
   2. Terms and Abbreviations .........................................6
   3. The IVI Translation Algorithm ...................................6
      3.1. Address Format .............................................8
      3.2. Routing and Forwarding .....................................9
      3.3. Network-Layer Header Translation ..........................10
      3.4. Transport-Layer Header Translation ........................11
      3.5. Fragmentation and MTU Handling ............................11
      3.6. ICMP Handling .............................................11
      3.7. Application Layer Gateway .................................12
   4. The IVI DNS Configuration ......................................12
      4.1. DNS Configuration for the IVI6(i) Addresses ...............12
      4.2. DNS Service for the IVIG6(i) Addresses ....................12
   5. The Advanced IVI Translation Functions .........................12
      5.1. IVI Multicast .............................................12
   6. IVI Host Operation .............................................13
      6.1. IVI Address Assignment ....................................13
      6.2. IPv6 Source Address Selection .............................13
   7. The IVI Implementation .........................................14
      7.1. Linux Implementation ......................................14
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