Runtime Local Mobility Anchor (LMA) Assignment Support for Proxy Mobile IPv6
RFC 6463
Internet Engineering Task Force (IETF) J. Korhonen, Ed.
Request for Comments: 6463 Nokia Siemens Networks
Category: Standards Track S. Gundavelli
ISSN: 2070-1721 Cisco
H. Yokota
KDDI Lab
X. Cui
Huawei Technologies
February 2012
Runtime Local Mobility Anchor (LMA) Assignment Support
for Proxy Mobile IPv6
Abstract
This document describes a runtime local mobility anchor assignment
functionality and corresponding mobility options for Proxy Mobile
IPv6. The runtime local mobility anchor assignment takes place
during a Proxy Binding Update and a Proxy Binding Acknowledgement
message exchange between a mobile access gateway and a local mobility
anchor. The runtime local mobility anchor assignment functionality
defined in this specification can be used, for example, for load-
balancing purposes.
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 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/rfc6463.
Korhonen, et al. Standards Track [Page 1]
RFC 6463 Runtime LMA Assignment February 2012
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
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described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Requirements and Terminology . . . . . . . . . . . . . . . . . 4
2.1. Requirements . . . . . . . . . . . . . . . . . . . . . . . 4
2.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 4
3. Proxy Mobile IPv6 Domain Assumptions . . . . . . . . . . . . . 5
4. Mobility Options . . . . . . . . . . . . . . . . . . . . . . . 5
4.1. Redirect-Capability Mobility Option . . . . . . . . . . . 5
4.2. Redirect Mobility Option . . . . . . . . . . . . . . . . . 6
4.3. Load Information Mobility Option . . . . . . . . . . . . . 7
4.4. Alternate IPv4 Care-of Address Mobility Option . . . . . . 9
5. Runtime LMA Assignment . . . . . . . . . . . . . . . . . . . . 9
5.1. General Operation . . . . . . . . . . . . . . . . . . . . 9
5.2. Mobile Access Gateway Operation . . . . . . . . . . . . . 10
5.3. Local Mobility Anchor Operation . . . . . . . . . . . . . 12
5.3.1. Co-Located rfLMA and r2LMA Functions . . . . . . . . . 13
5.3.2. Separate rfLMA and r2LMA Functions (Proxy-MAG) . . . . 14
6. Handoff and Multi-Homing Considerations . . . . . . . . . . . 18
7. Protocol Configuration Variables . . . . . . . . . . . . . . . 18
8. Security Considerations . . . . . . . . . . . . . . . . . . . 19
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 20
10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 20
11. References . . . . . . . . . . . . . . . . . . . . . . . . . . 20
11.1. Normative References . . . . . . . . . . . . . . . . . . . 20
11.2. Informative References . . . . . . . . . . . . . . . . . . 20
Korhonen, et al. Standards Track [Page 2]
RFC 6463 Runtime LMA Assignment February 2012
1. Introduction
This specification describes a runtime assignment of a local mobility
anchor (LMA) for the Proxy Mobile IPv6 (PMIPv6) [RFC5213] protocol.
The runtime LMA assignment takes place during a Proxy Binding Update
(PBU) and a Proxy Binding Acknowledgement (PBA) message exchange
between a mobile access gateway (MAG) and a LMA. The runtime LMA
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