RECONFIGURE Triggered by DHCPv6 Relay Agents
draft-ietf-dhc-triggered-reconfigure-02

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Last updated 2012-12-16
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DHC Working Group                                           M. Boucadair
Internet-Draft                                               X. Pougnard
Updates: 3315, 6422 (if approved)                         France Telecom
Intended status: Standards Track                       December 17, 2012
Expires: June 20, 2013

              RECONFIGURE Triggered by DHCPv6 Relay Agents
                draft-ietf-dhc-triggered-reconfigure-02

Abstract

   This document defines a new DHCPv6 message type: RECONFIGURE-REQUEST.
   This 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.

   This document updates RFC3315 and RFC6422.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on June 20, 2013.

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   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
     1.1.  Problem . . . . . . . . . . . . . . . . . . . . . . . . . . 3
     1.2.  Requirements Language . . . . . . . . . . . . . . . . . . . 4
   2.  Proposed Solution . . . . . . . . . . . . . . . . . . . . . . . 4
   3.  Link Address Option . . . . . . . . . . . . . . . . . . . . . . 5
   4.  RECONFIGURE-REQUEST . . . . . . . . . . . . . . . . . . . . . . 6
     4.1.  Message Format  . . . . . . . . . . . . . . . . . . . . . . 6
     4.2.  Message Validation  . . . . . . . . . . . . . . . . . . . . 6
     4.3.  Creation and Transmission of RECONFIGURE-REQUEST  . . . . . 7
     4.4.  Server Behaviour  . . . . . . . . . . . . . . . . . . . . . 8
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . . . 8
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 9
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 9
     8.1.  Normative References  . . . . . . . . . . . . . . . . . . . 9
     8.2.  Informative References  . . . . . . . . . . . . . . . . . . 9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 9

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1.  Introduction

1.1.  Problem

   [RFC6422] updates the DHCPv6 specification [RFC3315] with a new
   feature to let a DHCPv6 relay agent communicate information towards a
   DHCPv6 Client, and which is not available at the DHCPv6 server.  This
   is achieved owing to the use of RSOO (Relay-Supplied Options option)
   which carries configuration data to the DHCPv6 server.  The data
   conveyed in an RSOO is then sent back by the DHCPv6 server to the
   requesting DHCPv6 client.

   An example of a RSOO context is shown in Figure 1; only a subset of
   exchanged DHCPv6 and RADIUS messages is represented.

      +-------+                   +-------+                    +-------+
      |DHCPv6 |                   |  NAS  |                    |Radius |
      |Client |                   |(DHCPv6|                    |Server |
      |       |                   | Relay)|                    |       |
      +-------+                   +-------+                    +-------+
          |                           |                            |
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