464XLAT: Combination of Stateful and Stateless Translation
draft-ietf-v6ops-464xlat-07

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Document Type Active Internet-Draft (v6ops WG)
Last updated 2012-08-19
Replaces draft-mawatari-v6ops-464xlat
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Internet Engineering Task Force                              M. Mawatari
Internet-Draft                          Japan Internet Exchange Co.,Ltd.
Intended status: BCP                                        M. Kawashima
Expires: February 21, 2013                      NEC AccessTechnica, Ltd.
                                                                C. Byrne
                                                            T-Mobile USA
                                                         August 20, 2012

       464XLAT: Combination of Stateful and Stateless Translation
                      draft-ietf-v6ops-464xlat-07

Abstract

   This document describes an architecture (464XLAT) for providing
   limited IPv4 connectivity across an IPv6-only network by combining
   existing and well-known stateful protocol translation RFC 6146 in the
   core and stateless protocol translation RFC 6145 at the edge. 464XLAT
   is a simple and scalable technique to quickly deploy limited IPv4
   access service to IPv6-only edge networks without encapsulation.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on February 21, 2013.

Copyright Notice

   Copyright (c) 2012 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

Mawatari, et al.        Expires February 21, 2013               [Page 1]
Internet-Draft                   464XLAT                     August 2012

   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.  BCP Scenario . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Requirements Language  . . . . . . . . . . . . . . . . . . . .  3
   4.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   5.  Motivation and Uniqueness of 464XLAT . . . . . . . . . . . . .  4
   6.  Network Architecture . . . . . . . . . . . . . . . . . . . . .  4
     6.1.  Wireline Network Architecture  . . . . . . . . . . . . . .  5
     6.2.  Wireless 3GPP Network Architecture . . . . . . . . . . . .  6
   7.  Applicability  . . . . . . . . . . . . . . . . . . . . . . . .  7
     7.1.  Wireline Network Applicability . . . . . . . . . . . . . .  7
     7.2.  Wireless 3GPP Network Applicability  . . . . . . . . . . .  7
   8.  Implementation Considerations  . . . . . . . . . . . . . . . .  7
     8.1.  IPv6 Address Format  . . . . . . . . . . . . . . . . . . .  8
     8.2.  IPv4/IPv6 Address Translation Chart  . . . . . . . . . . .  8
       8.2.1.  Case of enabling only stateless XLATE on CLAT  . . . .  8
       8.2.2.  Case of enabling NAT44 and stateless XLATE on CLAT . . 10
     8.3.  IPv6 Prefix Handling . . . . . . . . . . . . . . . . . . . 12
       8.3.1.  Case of enabling only stateless XLATE on CLAT  . . . . 12
       8.3.2.  Case of enabling NAT44 and stateless XLATE on CLAT . . 12
     8.4.  DNS Proxy Implementation . . . . . . . . . . . . . . . . . 12
     8.5.  CLAT in a Gateway  . . . . . . . . . . . . . . . . . . . . 13
     8.6.  CLAT to CLAT communications  . . . . . . . . . . . . . . . 13
   9.  Deployment Considerations  . . . . . . . . . . . . . . . . . . 13
     9.1.  Traffic Engineering  . . . . . . . . . . . . . . . . . . . 13
     9.2.  Traffic Treatment Scenarios  . . . . . . . . . . . . . . . 14
   10. Security Considerations  . . . . . . . . . . . . . . . . . . . 14
   11. IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 14
   12. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 15
   13. References . . . . . . . . . . . . . . . . . . . . . . . . . . 15
     13.1. Normative References . . . . . . . . . . . . . . . . . . . 15
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