RADIUS Option for DHCPv6 Relay Agents on Broadband Access Server
draft-ietf-dhc-dhcpv6-radius-opt-04

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DHC Working Group                                                 L. Yeh
Internet-Draft                                       Huawei Technologies
Intended status: Standards Track                            M. Boucadair
Expires: May 9, 2013                                      France Telecom
                                                                T. Lemon
                                                            Nominum, Inc
                                                        November 5, 2012

    RADIUS Option for DHCPv6 Relay Agents on Broadband Access Server
                  draft-ietf-dhc-dhcpv6-radius-opt-04

Abstract

   The DHCPv6 RADIUS option provides a mechanism to exchange
   authorization and identification information between relay agent and
   server.  This mechanism is meant for the centralized DHCPv6 server to
   select the right configuration for the requesting client based on the
   authorization information received from the RADIUS server, which is
   not co-located with the DHCPv6 server.  The NAS acts as DHCPv6 relay
   agent and RADIUS client simultaneously in this document.

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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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 9, 2013.

Copyright Notice

   Copyright (c) 2012 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

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Internet-Draft            DHCPv6 RADIUS Option             November 2012

   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  Terminology and Language  . . . . . . . . . . . . . . . . . . . 3
   3.  Network Scenarios . . . . . . . . . . . . . . . . . . . . . . . 4
   4.  DHCPv6 RADIUS option  . . . . . . . . . . . . . . . . . . . . . 6
   5.  Relay Agent Behavior  . . . . . . . . . . . . . . . . . . . . . 6
   6.  Server Behavior . . . . . . . . . . . . . . . . . . . . . . . . 7
   7.  Client Behavior . . . . . . . . . . . . . . . . . . . . . . . . 7
   8.  Security Considerations . . . . . . . . . . . . . . . . . . . . 7
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 7
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 8
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . . . 8
     11.1.  Normative References . . . . . . . . . . . . . . . . . . . 8
     11.2.  Informative References . . . . . . . . . . . . . . . . . . 8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 9

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1.  Introduction

   DHCPv6 provides a mechanism that allows the server to assign or
   delegate both stateful and stateless configuration parameters to the
   clients.  The stateful configuration parameters include IPv6 address
   [RFC3315], IPv6 prefix [RFC3633], etc.  The stateless configuration
   parameters [RFC3736] include, for example, DNS [RFC3646], or a FQDN
   of AFTR [RFC6334].  In this document, the DHCPv6 server is deployed
   in the central part of an ISP network.

   RADIUS [RFC2865] is widely used as the centralized authentication,
   authorization and user management mechanism for the service provision
   in Broadband access network.  [RFC3162], [RFC4818], [RFC6519] and
   [I-D.ietf-radext-ipv6-access] specified attributes that support the
   service provision for IPv6-only and IPv6-transition access.  RADIUS
   server authorizes the NAS to assign an IPv6 address or prefix from
   the indicated pool, or to assign an IPv6 address or prefix with an