RADIUS Option for DHCPv6 Relay Agent on the Broadband Access Servers
draft-ietf-dhc-dhcpv6-radius-opt-09

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DHC Working Group                                                 L. Yeh
Internet-Draft                                   Freelancer Technologies
Intended status: Standards Track                            M. Boucadair
Expires: August 29, 2013                                  France Telecom
                                                       February 25, 2013

  RADIUS Option for DHCPv6 Relay Agent on the Broadband Access Servers
                  draft-ietf-dhc-dhcpv6-radius-opt-09

Abstract

   The DHCPv6 RADIUS option provides a mechanism to exchange
   authorization and identification information between the DHCPv6 relay
   agent and the DHCPv6 server.  This mechanism is meant for the
   centralized DHCPv6 server to select the right configuration for the
   requesting DHCPv6 client based on the authorization information
   received from the RADIUS server, which is not co-located with the
   DHCPv6 server.  The Network Access Server (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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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 29, 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
   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 . . . . . . . . . . . . . . . . . . . . .  7
   5.  Relay Agent Behavior . . . . . . . . . . . . . . . . . . . . .  8
   6.  Server Behavior  . . . . . . . . . . . . . . . . . . . . . . .  8
   7.  Client Behavior  . . . . . . . . . . . . . . . . . . . . . . .  8
   8.  Security Considerations  . . . . . . . . . . . . . . . . . . .  9
   9.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  9
   10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . .  9
   11. References . . . . . . . . . . . . . . . . . . . . . . . . . .  9
     11.1.  Normative References  . . . . . . . . . . . . . . . . . .  9
     11.2.  Informative References  . . . . . . . . . . . . . . . . . 10
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 10

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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 the scenarios described 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 Network Access Server (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, and other