Heartbeat Mechanism for Proxy Mobile IPv6
RFC 5847
Internet Engineering Task Force (IETF) V. Devarapalli, Ed.
Request for Comments: 5847 WiChorus
Category: Standards Track R. Koodli, Ed.
ISSN: 2070-1721 Cisco Systems
H. Lim
N. Kant
Stoke
S. Krishnan
J. Laganier
Qualcomm Inc.
June 2010
Heartbeat Mechanism for Proxy Mobile IPv6
Abstract
Proxy Mobile IPv6 (PMIPv6) is a network-based mobility management
protocol. The mobility entities involved in the Proxy Mobile IPv6
protocol, the mobile access gateway (MAG) and the local mobility
anchor (LMA), set up tunnels dynamically to manage mobility for a
mobile node within the Proxy Mobile IPv6 domain. This document
describes a heartbeat mechanism between the MAG and the LMA to detect
failures, quickly inform peers in the event of a recovery from node
failures, and allow a peer to take appropriate action.
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/rfc5847.
Devarapalli, et al. Standards Track [Page 1]
RFC 5847 PMIPv6 Heartbeat Mechanism June 2010
Copyright Notice
Copyright (c) 2010 IETF Trust and the persons identified as the
document authors. All rights reserved.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Heartbeat Mechanism . . . . . . . . . . . . . . . . . . . . . 3
3.1. Failure Detection . . . . . . . . . . . . . . . . . . . . 4
3.2. Restart Detection . . . . . . . . . . . . . . . . . . . . 5
3.3. Heartbeat Message . . . . . . . . . . . . . . . . . . . . 6
3.4. Restart Counter Mobility Option . . . . . . . . . . . . . 7
4. Exchanging Heartbeat Messages over an IPv4 Transport
Network . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5. Configuration Variables . . . . . . . . . . . . . . . . . . . 8
6. Security Considerations . . . . . . . . . . . . . . . . . . . 8
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 9
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 9
9.1. Normative References . . . . . . . . . . . . . . . . . . . 9
9.2. Informative References . . . . . . . . . . . . . . . . . . 10
Devarapalli, et al. Standards Track [Page 2]
RFC 5847 PMIPv6 Heartbeat Mechanism June 2010
1. Introduction
Proxy Mobile IPv6 (PMIPv6) [RFC5213] enables network-based mobility
for IPv6 hosts that do not implement any mobility protocols. The
protocol is described in detail in [RFC5213]. In order to facilitate
the network-based mobility, the PMIPv6 protocol defines a mobile
access gateway (MAG), which acts as a proxy for the Mobile IPv6
[RFC3775] signaling, and the local mobility anchor (LMA), which acts
similar to a home agent, anchoring a mobile node's sessions within a
PMIPv6 domain. The LMA and the MAG establish a bidirectional tunnel
for forwarding all data traffic belonging to the mobile nodes.
In a distributed environment such as a PMIPv6 domain consisting of
LMAs and MAGs, it is necessary for the nodes to 1) have a consistent
state about each other's reachability, and 2) quickly inform peers in
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