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RADIUS Extensions for IPv4-Embedded Multicast and Unicast IPv6 Prefixes
draft-hu-softwire-multicast-radius-ext-06

Document type: Active Internet-Draft (individual)
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Last updated: 2014-10-23
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Softwire WG                                                      Q. Wang
Internet-Draft                                             China Telecom
Intended status: Standards Track                                 W. Meng
Expires: April 26, 2015                                          C. Wang
                                                         ZTE Corporation
                                                            M. Boucadair
                                                          France Telecom
                                                        October 23, 2014

RADIUS Extensions for IPv4-Embedded Multicast and Unicast IPv6 Prefixes
               draft-hu-softwire-multicast-radius-ext-06

Abstract

   This document specifies a new Remote Authentication Dial-In User
   Service (RADIUS) attribute to carry the Multicast-Prefixes-64
   information, aiming to delivery the Multicast and Unicast IPv6
   Prefixes to be used to build multicast and unicast IPv4-Embedded IPv6
   addresses. this RADIUS attribute is defined based on the equivalent
   DHCPv6 OPTION_v6_PREFIX64 option.

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
   Task Force (IETF).  Note that other groups may also distribute
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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
   and may be updated, replaced, or obsoleted by other documents at any
   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 April 26, 2015.

Copyright Notice

   Copyright (c) 2014 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

Wang, et al.             Expires April 26, 2015                 [Page 1]
Internet-Draft  RADIUS Extensions for Multicast Prefixes    October 2014

   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.  Convention and Terminology . . . . . . . . . . . . . . . . . .  4
   3.  Multicast-Prefixes-64 Configuration with RADIUS and DHCPv6 . .  5
   4.  RADIUS Attribute . . . . . . . . . . . . . . . . . . . . . . .  8
     4.1.  Multicast-Prefixes-64  . . . . . . . . . . . . . . . . . .  8
   5.  Table of Attributes  . . . . . . . . . . . . . . . . . . . . . 11
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 12
   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 13
   8.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 14
   9.  Normative References . . . . . . . . . . . . . . . . . . . . . 15
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 16

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Internet-Draft  RADIUS Extensions for Multicast Prefixes    October 2014

1.  Introduction

   The solution specified in [I-D.ietf-softwire-dslite-multicast] relies
   on stateless functions to graft part of the IPv6 multicast
   distribution tree and IPv4 multicast distribution tree, also uses
   IPv4-in-IPv6 encapsulation scheme to deliver IPv4 multicast traffic
   over an IPv6 multicast-enabled network to IPv4 receivers.

   To inform the mB4 element of the PREFIX64,a PREFIX64 option may be
   used.  [I-D.ietf-softwire-multicast-prefix-option] defines a DHCPv6
   PREFIX64 option to convey the IPv6 prefixes to be used for
   constructing IPv4-embedded IPv6 addresses.

   In broadband environments, a customer profile may be managed by
   Authentication, Authorization, and Accounting (AAA) servers, together
   with AAA for users.  The Remote Authentication Dial-In User Service
   (RADIUS) protocol [RFC2865] is usually used by AAA servers to
   communicate with network elements.  Since the Multicast-Prefixes-64
   information can be stored in AAA servers and the client configuration
   is mainly provided through DHCP running between the NAS and the
   requesting clients, a new RADIUS attribute is needed to send

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