RADIUS Option for DHCPv6 Relay Agents on Broadband Access Server
draft-ietf-dhc-dhcpv6-radius-opt-01

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Last updated 2012-07-29
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DHC Working Group                                            L. Yeh, Ed.
Internet-Draft                                       Huawei Technologies
Intended status: Standards Track                            M. Boucadair
Expires: January 31, 2013                                 France Telecom
                                                                T. Lemon
                                                            Nominum, Inc
                                                           July 30, 2012

    RADIUS Option for DHCPv6 Relay Agents on Broadband Access Server
                  draft-ietf-dhc-dhcpv6-radius-opt-01

Abstract

   The DHCPv6 RADIUS option provides a communication mechanism between
   relay agent and the server.  This mechanism can help the centralized
   DHCPv6 server to select the right configuration for the client based
   on the authorization information received from a separate RADIUS
   server which is not located at the same place of DHCPv6 server in the
   cases where the NAS acts as DHCPv6 relay agent and RADIUS client
   simultaneously.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on January 31, 2013.

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   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
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   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents

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   carefully, as they describe your rights and restrictions with respect
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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
   2.  Terminology and Language  . . . . . . . . . . . . . . . . . . . 3
   3.  Network Scenarios . . . . . . . . . . . . . . . . . . . . . . . 4
   4.  OPTION_RADIUS . . . . . . . . . . . . . . . . . . . . . . . . . 6
   5.  Relay Agent Behavior  . . . . . . . . . . . . . . . . . . . . . 6
   6.  Server Behavior . . . . . . . . . . . . . . . . . . . . . . . . 7
   7.  Client Behavior . . . . . . . . . . . . . . . . . . . . . . . . 7
   8.  Security Considerations . . . . . . . . . . . . . . . . . . . . 7
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 7
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 7
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . . . 8
     11.1.  Normative References . . . . . . . . . . . . . . . . . . . 8
     11.2.  Informative References . . . . . . . . . . . . . . . . . . 8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 8

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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], and etc.  The stateless
   configuration parameters [RFC3736] include, for example, DNS
   [RFC3646].  The DHCPv6 server is typically deployed in the central
   part of an ISP network.

   RADIUS [RFC2865], an essentially stateless protocol, is used widely
   as the centralized authentication, authorization and user management
   mechanism for the service provision in Broadband access network.
   [RFC3162], [RFC4818] and [ietf-radext-ipv6-access-10] specify
   attributes that supports the provision of service for IPv6 access.
   RADIUS authorizes the NAS to assign an IPv6 address or prefix from
   the indicated pool, or to assign an IPv6 address or prefix with an
   explicitly indicated value in the attributes for the subscribers.
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