Softwire WG Q. Wang
Internet-Draft China Telecom
Intended status: Standards Track W. Meng
Expires: August 29, 2013 C. Wang
ZTE Corporation
M. Boucadair
France Telecom
February 25, 2013
RADIUS Extensions for IPv4-Embedded Multicast and Unicast IPv6 Prefixes
draft-hu-softwire-multicast-radius-ext-03
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_PREFIX64 option.
Status of this Memo
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This Internet-Draft will expire on August 29, 2013.
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Wang, et al. Expires August 29, 2013 [Page 1]
Internet-Draft RADIUS Extensions for Multicast Prefixes February 2013
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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. Normative References . . . . . . . . . . . . . . . . . . . . . 14
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 15
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Internet-Draft RADIUS Extensions for Multicast Prefixes February 2013
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. DS-Lite
Multicast [I-D.ietf-softwire-dslite-multicast] is a solution in
particular to offer multicast service to DS-Lite serviced customers.
[I-D.ietf-softwire-multicast-prefix-option] defines a DHCPv6 option
that is meant to be used by a mB4 element to convey the IPv6 prefixes
to be used for constructing IPv4-embedded IPv6 addresses and
extracting the IPv4 address when needed. In order to be able to
populate such an option, the DHCPv6 server must be pre-provisioned
with the required Multicast Prefixes.
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
datatracker.ietf.org