Delivery of IPv4 Multicast Services to IPv4 Clients over an IPv6 Multicast Network
RFC 8114
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Type |
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RFC - Proposed Standard
(March 2017; No errata)
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Last updated |
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2017-03-17
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Replaces |
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draft-qin-softwire-dslite-multicast
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Stream |
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IETF
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Formats |
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plain text
pdf
html
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Ian Farrer
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Shepherd write-up |
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Show
(last changed 2016-11-04)
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| IESG |
IESG state |
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RFC 8114 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Terry Manderson
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Send notices to |
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(None)
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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No IANA Actions
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Internet Engineering Task Force (IETF) M. Boucadair
Request for Comments: 8114 Orange
Category: Standards Track C. Qin
ISSN: 2070-1721 Cisco
C. Jacquenet
Orange
Y. Lee
Comcast
Q. Wang
China Telecom
March 2017
Delivery of IPv4 Multicast Services to IPv4 Clients over
an IPv6 Multicast Network
Abstract
This document specifies a solution for the delivery of IPv4 multicast
services to IPv4 clients over an IPv6 multicast network. The
solution relies upon a stateless IPv4-in-IPv6 encapsulation scheme
and uses an IPv6 multicast distribution tree to deliver IPv4
multicast traffic. The solution is particularly useful for the
delivery of multicast service offerings to customers serviced by
Dual-Stack Lite (DS-Lite).
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 7841.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc8114.
Boucadair, et al. Standards Track [Page 1]
RFC 8114 IPv4 over IPv6 Multicast March 2017
Copyright Notice
Copyright (c) 2017 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
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.
Boucadair, et al. Standards Track [Page 2]
RFC 8114 IPv4 over IPv6 Multicast March 2017
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 5
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. Solution Overview . . . . . . . . . . . . . . . . . . . . . . 6
4.1. IPv4-Embedded IPv6 Prefixes . . . . . . . . . . . . . . . 7
4.2. Multicast Distribution Tree Computation . . . . . . . . . 8
4.3. Multicast Data Forwarding . . . . . . . . . . . . . . . . 9
5. IPv4/IPv6 Address Mapping . . . . . . . . . . . . . . . . . . 9
5.1. Prefix Assignment . . . . . . . . . . . . . . . . . . . . 9
5.2. Multicast Address Translation Algorithm . . . . . . . . . 10
5.3. Textual Representation . . . . . . . . . . . . . . . . . 10
5.4. Examples . . . . . . . . . . . . . . . . . . . . . . . . 10
6. Multicast B4 (mB4) . . . . . . . . . . . . . . . . . . . . . 11
6.1. IGMP-MLD Interworking Function . . . . . . . . . . . . . 11
6.2. Multicast Data Forwarding . . . . . . . . . . . . . . . . 12
6.3. Fragmentation . . . . . . . . . . . . . . . . . . . . . . 12
6.4. Host Built-In mB4 Function . . . . . . . . . . . . . . . 12
6.5. Preserve the Scope . . . . . . . . . . . . . . . . . . . 13
7. Multicast AFTR (mAFTR) . . . . . . . . . . . . . . . . . . . 13
7.1. Routing Considerations . . . . . . . . . . . . . . . . . 13
7.2. Processing PIM Messages . . . . . . . . . . . . . . . . . 14
7.3. Switching from Shared Tree to Shortest Path Tree . . . . 15
7.4. Multicast Data Forwarding . . . . . . . . . . . . . . . . 15
7.5. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8. Deployment Considerations . . . . . . . . . . . . . . . . . . 16
8.1. Other Operational Modes . . . . . . . . . . . . . . . . . 16
8.1.1. The IPv6 DR is Co-located with the mAFTR . . . . . . 16
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