DHCP Options for Home Information Discovery in MIPv6
draft-ietf-mip6-hiopt-17
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Active Internet-Draft (mip6 WG)
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2008-05-23
(latest revision 2008-05-22)
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draft-jang-mip6-hiopt
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IETF
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Proposed Standard
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Jari Arkko
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mext-chairs@tools.ietf.org,dhc-chairs@tools.ietf.org,draft-ietf-mip6-hiopt@tools.ietf.org,basavaraj.patil@nsn.com
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IESG |
MIP6 Working Group H. Jang
Internet-Draft A. Yegin
Intended status: Standards Track Samsung
Expires: November 23, 2008 K. Chowdhury
Starent Networks
J. Choi
Samsung
May 22, 2008
DHCP Options for Home Information Discovery in MIPv6
draft-ietf-mip6-hiopt-17.txt
Status of this Memo
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This Internet-Draft will expire on November 23, 2008.
Jang, et al. Expires November 23, 2008 [Page 1]
Internet-Draft DHCPv6 for Home Info Discovery in MIPv6 May 2008
Abstract
This draft defines a DHCP-based scheme to enable dynamic discovery of
Mobile IPv6 home network information. New DHCP options are defined
which allow a mobile node to request the home agent IP address, FQDN,
or home network prefix and obtain it via the DHCP response.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. DHCP options for HA Dynamic Discovery . . . . . . . . . . . . 5
3.1. Home Network Information Option . . . . . . . . . . . . . 5
3.2. MIP6 Relay Agent Option . . . . . . . . . . . . . . . . . 7
3.3. Common Sub-options . . . . . . . . . . . . . . . . . . . . 8
4. Option Usage . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1. Mobile Node Behavior . . . . . . . . . . . . . . . . . . . 11
4.2. NAS/DHCP Relay Agent Behavior . . . . . . . . . . . . . . 12
4.3. DHCP Server Behavior . . . . . . . . . . . . . . . . . . . 13
5. Security Considerations . . . . . . . . . . . . . . . . . . . 17
6. IANA Consideration . . . . . . . . . . . . . . . . . . . . . . 18
7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 19
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.1. Normative References . . . . . . . . . . . . . . . . . . . 20
8.2. Informative References . . . . . . . . . . . . . . . . . . 21
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 22
Intellectual Property and Copyright Statements . . . . . . . . . . 23
Jang, et al. Expires November 23, 2008 [Page 2]
Internet-Draft DHCPv6 for Home Info Discovery in MIPv6 May 2008
1. Introduction
Before a mobile node can engage in Mobile IPv6 signaling with a home
agent, it should either know the IP address of the home agent via
pre-configuration, or dynamically discover it. The Mobile IPv6
specification [RFC3775] describes how home agents can be dynamically
discovered by mobile nodes that know the home network prefix. This
scheme does not work when prefix information is not already available
to the mobile node. One architecture to solve this problem is
described in [I-D.ietf-mip6-bootstrapping-integrated-dhc]. This
document specifies extensions to stateless DHCPv6 [RFC3736] [RFC3315]
to deliver the home agent information to the mobile node in the form
of the IP address of the home agent or the FQDN of the home agent.
The information delivered to the mobile node may also include the
home prefix for the mobile node. The solution involves defining a
new DHCP option to carry home network prefix, home agent IP address
and FQDN information. The mobile node MAY also use the home prefix
to discover the list of home agents serving the home prefix using the
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