Reconfigure Triggered by DHCPv6 Relay Agents
draft-ietf-dhc-triggered-reconfigure-04

The information below is for an old version of the document
Document Type Active Internet-Draft (dhc WG)
Last updated 2013-03-19 (latest revision 2013-03-11)
Replaces draft-boucadair-dhc-triggered-reconfigure
Stream IETF
Intended RFC status Proposed Standard
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Document shepherd Bernie Volz
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DHC Working Group                                           M. Boucadair
Internet-Draft                                               X. Pougnard
Updates: 3315, 6422 (if approved)                         France Telecom
Intended status: Standards Track                          March 11, 2013
Expires: September 12, 2013

              Reconfigure Triggered by DHCPv6 Relay Agents
                draft-ietf-dhc-triggered-reconfigure-04

Abstract

   This document defines new DHCPv6 messages: Reconfigure-Request and
   Reconfigure-Reply.  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.  Reconfigure-Reply message is used by the server
   to acknowledge the receipt of Reconfigure-Request.

   This document updates RFC 3315 and RFC 6422.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on September 12, 2013.

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

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   to this document.  Code Components extracted from this document must
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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  . . . . . . . . . . . . . . . . . . . . .  6
   4.  RECONFIGURE-REQUEST and RECONFIGURE-REPLY  . . . . . . . . . .  6
     4.1.  Messages Format  . . . . . . . . . . . . . . . . . . . . .  6
     4.2.  Messages Validation  . . . . . . . . . . . . . . . . . . .  7
       4.2.1.  RECONFIGURE-REQUEST  . . . . . . . . . . . . . . . . .  7
       4.2.2.  RECONFIGURE-REPLY  . . . . . . . . . . . . . . . . . .  7
     4.3.  Creation and Transmission of RECONFIGURE-REQUEST . . . . .  7
     4.4.  Intermediate Relay Agents Behaviour  . . . . . . . . . . .  8
     4.5.  Server Behaviour . . . . . . . . . . . . . . . . . . . . .  9
     4.6.  Receipt of RECONFIGURE-REPLY . . . . . . . . . . . . . . . 10
   5.  Rate Limiting Considerations . . . . . . . . . . . . . . . . . 10
   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 10
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 11
   8.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 11
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 11
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 12
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 12

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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.  Figure 1 shows
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