Home Network Prefix Renumbering in Proxy Mobile IPv6 (PMIPv6)
RFC 8191
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Type |
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RFC - Proposed Standard
(August 2017; No errata)
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Last updated |
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2017-08-03
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Replaces |
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draft-yan-dmm-hnprenum
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Stream |
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IETF
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plain text
pdf
html
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Dapeng Liu
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Shepherd write-up |
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Show
(last changed 2016-11-01)
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| IESG |
IESG state |
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RFC 8191 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Suresh Krishnan
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Send notices to |
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"Dapeng Liu" <max.ldp@alibaba-inc.com>
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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No IANA Actions
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Internet Engineering Task Force (IETF) Z. Yan
Request for Comments: 8191 CNNIC
Category: Standards Track J. Lee
ISSN: 2070-1721 Sangmyung University
X. Lee
CNNIC
August 2017
Home Network Prefix Renumbering in Proxy Mobile IPv6 (PMIPv6)
Abstract
In the basic Proxy Mobile IPv6 (PMIPv6) specification, a Mobile Node
(MN) is assigned with a Home Network Prefix (HNP) during its initial
attachment, and the MN configures its Home Address (HoA) with the
HNP. During the movement of the MN, the HNP remains unchanged to
keep ongoing communications associated with the HoA. However, the
current PMIPv6 specification does not specify related operations when
HNP renumbering has occurred (e.g., due to change of service provider
or site topology, etc.). In this document, a solution to support HNP
renumbering is proposed, as an optional extension of the PMIPv6
specification.
Status of This Memo
This is an Internet Standards Track document.
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). Further information on
Internet Standards is available in Section 2 of RFC 7841.
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/rfc8191.
Yan, et al. Standards Track [Page 1]
RFC 8191 PMIPv6 HNP Renumbering August 2017
Copyright Notice
Copyright (c) 2017 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. Requirements Language . . . . . . . . . . . . . . . . . . 3
2. Usage Scenarios . . . . . . . . . . . . . . . . . . . . . . . 3
3. HNP Renumbering Procedure . . . . . . . . . . . . . . . . . . 4
4. Session Connectivity . . . . . . . . . . . . . . . . . . . . 6
5. Message Format . . . . . . . . . . . . . . . . . . . . . . . 6
6. Other Issues . . . . . . . . . . . . . . . . . . . . . . . . 7
7. Security Considerations . . . . . . . . . . . . . . . . . . . 7
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 8
9.1. Normative References . . . . . . . . . . . . . . . . . . 8
9.2. Informative References . . . . . . . . . . . . . . . . . 9
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 10
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 10
Yan, et al. Standards Track [Page 2]
RFC 8191 PMIPv6 HNP Renumbering August 2017
1. Introduction
At the time of writing, network managers prefer Provider-Independent
(PI) addressing for IPv6 to attempt to minimize the need for future
possible renumbering. However, a widespread use of PI addresses will
cause Border Gateway Protocol (BGP) scaling problems [RFC7010]. It
is thus desirable to develop tools and practices that make IPv6
renumbering a simpler process to reduce demand for IPv6 PI space
[RFC6879]. In this document, we aim to support HNP renumbering when
the HNP in PMIPv6 [RFC5213] is not a PI prefix.
1.1. Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in BCP
14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here.
2. Usage Scenarios
There are a number of reasons why HNP renumbering support in PMIPv6
is useful, and some scenarios are identified below:
Scenario 1: the HNP set used by a PMIPv6 service provider is
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