Analysis of Failure Cases in IPv6 Roaming Scenarios
RFC 7445

Document Type RFC - Informational (March 2015; No errata)
Last updated 2015-10-14
Replaces draft-chen-v6ops-ipv6-roaming-analysis
Stream IETF
Formats plain text pdf html bibtex
Reviews
Stream WG state Submitted to IESG for Publication
Document shepherd Fred Baker
Shepherd write-up Show (last changed 2014-09-14)
IESG IESG state RFC 7445 (Informational)
Consensus Boilerplate Yes
Telechat date
Responsible AD Joel Jaeggli
Send notices to (None)
IANA IANA review state Version Changed - Review Needed
IANA action state No IC
Internet Engineering Task Force (IETF)                           G. Chen
Request for Comments: 7445                                       H. Deng
Category: Informational                                     China Mobile
ISSN: 2070-1721                                               D. Michaud
                                                   Rogers Communications
                                                             J. Korhonen
                                                    Broadcom Corporation
                                                            M. Boucadair
                                                          France Telecom
                                                              March 2015

          Analysis of Failure Cases in IPv6 Roaming Scenarios

Abstract

   This document identifies a set of failure cases that may be
   encountered by IPv6-enabled mobile customers in roaming scenarios.
   The analysis reveals that the failure causes include improper
   configurations, incomplete functionality support in equipment, and
   inconsistent IPv6 deployment strategies between the home and the
   visited networks.

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/rfc7445.

Chen, et al.                  Informational                     [Page 1]
RFC 7445                  IPv6 Roaming Analysis               March 2015

Copyright Notice

   Copyright (c) 2015 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.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Background  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Roaming Architecture: An Overview . . . . . . . . . . . .   4
       2.1.1.  Home Routed Mode  . . . . . . . . . . . . . . . . . .   4
       2.1.2.  Local Breakout Mode . . . . . . . . . . . . . . . . .   5
     2.2.  Typical Roaming Scenarios . . . . . . . . . . . . . . . .   6
   3.  Failure Case in the Network Attachment  . . . . . . . . . . .   7
   4.  Failure Cases in the PDP/PDN Creation . . . . . . . . . . . .   9
     4.1.  Case 1: Splitting Dual-Stack Bearer . . . . . . . . . . .   9
     4.2.  Case 2: IPv6 PDP/PDN Unsupported  . . . . . . . . . . . .  11
     4.3.  Case 3: Inappropriate Roaming APN Set . . . . . . . . . .  11
     4.4.  Case 4: Fallback Failure  . . . . . . . . . . . . . . . .  11
   5.  Failure Cases in the Service Requests . . . . . . . . . . . .  12
     5.1.  Lack of IPv6 Support in Applications  . . . . . . . . . .  12
     5.2.  464XLAT Support . . . . . . . . . . . . . . . . . . . . .  12
   6.  HLR/HSS User Profile Setting  . . . . . . . . . . . . . . . .  13
   7.  Discussion  . . . . . . . . . . . . . . . . . . . . . . . . .  14
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  15
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  16
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  16
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  16
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  18
   Contributors  . . . . . . . . . . . . . . . . . . . . . . . . . .  18
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  19

Chen, et al.                  Informational                     [Page 2]
RFC 7445                  IPv6 Roaming Analysis               March 2015

1.  Introduction

   Many mobile operators have deployed IPv6, or are about to, in their
Show full document text