Triggering DHCPv6 Reconfiguration from Relay Agents
RFC 6977
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RFC - Proposed Standard
(July 2013; No errata)
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Last updated |
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2015-10-14
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Replaces |
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draft-boucadair-dhc-triggered-reconfigure
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IETF
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plain text
pdf
html
bibtex
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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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Bernie Volz
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Shepherd write-up |
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Show
(last changed 2013-04-05)
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| IESG |
IESG state |
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RFC 6977 (Proposed Standard)
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Consensus Boilerplate |
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Unknown
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Telechat date |
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Responsible AD |
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Ted Lemon
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IESG note |
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Bernie Volz is the document shepherd (volz@cisco.com).
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(None)
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| IANA |
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Version Changed - Review Needed
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IANA action state |
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) M. Boucadair
Request for Comments: 6977 X. Pougnard
Category: Standards Track France Telecom
ISSN: 2070-1721 July 2013
Triggering DHCPv6 Reconfiguration from Relay Agents
Abstract
This document defines two new DHCPv6 messages: Reconfigure-Request
and Reconfigure-Reply. The Reconfigure-Request message is sent by a
DHCPv6 relay agent to notify a DHCPv6 server about a configuration
information change, so that the DHCPv6 server can send a Reconfigure
message accordingly. The Reconfigure-Reply message is used by the
server to acknowledge the receipt of the Reconfigure-Request message.
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/rfc6977.
Copyright Notice
Copyright (c) 2013 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.
Boucadair & Pougnard Standards Track [Page 1]
RFC 6977 DHCPv6 Relay-Triggered Reconfiguration July 2013
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 3
3. Problem Statement . . . . . . . . . . . . . . . . . . . . . . 3
4. Solution Overview . . . . . . . . . . . . . . . . . . . . . . 4
5. Link Address Option . . . . . . . . . . . . . . . . . . . . . 6
6. Detailed Specification . . . . . . . . . . . . . . . . . . . 6
6.1. Messages Format . . . . . . . . . . . . . . . . . . . . . 6
6.2. Messages Validation . . . . . . . . . . . . . . . . . . . 7
6.2.1. Reconfigure-Request . . . . . . . . . . . . . . . . . 7
6.2.2. Reconfigure-Reply . . . . . . . . . . . . . . . . . . 7
6.3. Creation and Transmission of a Reconfigure-Request . . . 7
6.4. Intermediate Relay Agents Behavior . . . . . . . . . . . 9
6.5. Server Behavior . . . . . . . . . . . . . . . . . . . . . 9
6.6. Receipt of a Reconfigure-Reply . . . . . . . . . . . . . 10
7. Rate-Limiting Considerations . . . . . . . . . . . . . . . . 10
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 11
9. Security Considerations . . . . . . . . . . . . . . . . . . . 11
10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 12
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 12
11.1. Normative References . . . . . . . . . . . . . . . . . . 12
11.2. Informative References . . . . . . . . . . . . . . . . . 12
1. Introduction
This document specifies two new DHCPv6 messages [RFC3315]:
Reconfigure-Request and Reconfigure-Reply.
Section 3 describes a typical problem scenario encountered that
triggers the DHCPv6 server to issue a Reconfigure message when the
configuration data is supplied by the relay agent. This problem may
be encountered in other contexts. It is out of scope of this
document to list all these cases.
Section 4 describes the proposed solution that relies on the use of
Reconfigure-Request and Reconfigure-Reply messages. The Reconfigure-
Request message is sent by a DHCPv6 relay agent to notify a DHCPv6
server about a configuration-information change, so that the DHCPv6
server can send a Reconfigure message accordingly. The Reconfigure-
Reply message is used by the server to acknowledge the receipt of
Reconfigure-Request.
Section 5 specifies the Link Address Option used by the relay agent
to indicate the link on which the client is located to the server.
Section 6 provides the detailed specification of the procedure to
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