datatracker.ietf.org
Sign in
Version 5.4.0, 2014-04-22
Report a bug

Mapping of Address and Port with Encapsulation (MAP)
draft-ietf-softwire-map-10

Document type: Active Internet-Draft (softwire WG)
Document stream: IETF
Last updated: 2014-01-24
Intended RFC status: Unknown
Other versions: plain text, pdf, html

IETF State: WG Document
Doc Shepherd Follow-up Underway
Document shepherd: Suresh Krishnan

IESG State: I-D Exists
Responsible AD: (None)
Send notices to: No addresses provided

Network Working Group                                      O. Troan, Ed.
Internet-Draft                                                    W. Dec
Intended status: Standards Track                           Cisco Systems
Expires: July 28, 2014                                             X. Li
                                                                  C. Bao
                                       CERNET Center/Tsinghua University
                                                           S. Matsushima
                                                        SoftBank Telecom
                                                             T. Murakami
                                                             IP Infusion
                                                          T. Taylor, Ed.
                                                     Huawei Technologies
                                                        January 24, 2014

          Mapping of Address and Port with Encapsulation (MAP)
                       draft-ietf-softwire-map-10

Abstract

   This document describes a mechanism for transporting IPv4 packets
   across an IPv6 network using IP encapsulation, and a generic
   mechanism for mapping between IPv6 addresses and IPv4 addresses and
   transport layer ports.

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 http://datatracker.ietf.org/drafts/current/.

   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 July 28, 2014.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Troan, et al.             Expires July 28, 2014                 [Page 1]
Internet-Draft                     MAP                      January 2014

   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
   2.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Architecture  . . . . . . . . . . . . . . . . . . . . . . . .   5
   5.  Mapping Algorithm . . . . . . . . . . . . . . . . . . . . . .   7
     5.1.  Port mapping algorithm  . . . . . . . . . . . . . . . . .   8
     5.2.  Basic mapping rule (BMR)  . . . . . . . . . . . . . . . .   9
     5.3.  Forwarding mapping rule (FMR) . . . . . . . . . . . . . .  12
     5.4.  Destinations outside the MAP domain . . . . . . . . . . .  13
   6.  The IPv6 Interface Identifier . . . . . . . . . . . . . . . .  13
   7.  MAP Configuration . . . . . . . . . . . . . . . . . . . . . .  14
     7.1.  MAP CE  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     7.2.  MAP BR  . . . . . . . . . . . . . . . . . . . . . . . . .  15
   8.  Forwarding Considerations . . . . . . . . . . . . . . . . . .  15
     8.1.  Receiving Rules . . . . . . . . . . . . . . . . . . . . .  16
     8.2.  ICMP  . . . . . . . . . . . . . . . . . . . . . . . . . .  16
     8.3.  Fragmentation and Path MTU Discovery  . . . . . . . . . .  17
       8.3.1.  Fragmentation in the MAP domain . . . . . . . . . . .  17
       8.3.2.  Receiving IPv4 Fragments on the MAP domain borders  .  17
       8.3.3.  Sending IPv4 fragments to the outside . . . . . . . .  18
   9.  NAT44 Considerations  . . . . . . . . . . . . . . . . . . . .  18
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  18
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  18
   12. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  19
   13. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  20
   14. References  . . . . . . . . . . . . . . . . . . . . . . . . .  20
     14.1.  Normative References . . . . . . . . . . . . . . . . . .  20

[include full document text]