Automatic Multicast Tunneling
RFC 7450
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RFC - Proposed Standard
(February 2015; No errata)
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Last updated |
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2015-10-14
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IETF
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plain text
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WG state
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WG Document
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Document shepherd |
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No shepherd assigned
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Show
(last changed 2014-05-03)
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IESG state |
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RFC 7450 (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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Joel Jaeggli
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IESG note |
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Lenny Giuliano (lenny@juniper.net) is the Document Shepherd.
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(None)
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| IANA |
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Version Changed - Review Needed
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) G. Bumgardner
Request for Comments: 7450 February 2015
Category: Standards Track
ISSN: 2070-1721
Automatic Multicast Tunneling
Abstract
This document describes Automatic Multicast Tunneling (AMT), a
protocol for delivering multicast traffic from sources in a
multicast-enabled network to receivers that lack multicast
connectivity to the source network. The protocol uses UDP
encapsulation and unicast replication to provide this functionality.
The AMT protocol is specifically designed to support rapid deployment
by requiring minimal changes to existing network infrastructure.
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 5741.
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/rfc7450.
Copyright Notice
Copyright (c) 2015 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.
Bumgardner Standards Track [Page 1]
RFC 7450 AMT February 2015
Table of Contents
1. Introduction ....................................................3
2. Applicability ...................................................3
3. Terminology .....................................................4
3.1. Requirements Notation ......................................4
3.2. Definitions ................................................4
3.3. Abbreviations ..............................................5
4. Protocol Overview ...............................................6
4.1. General Architecture .......................................6
4.1.1. Relationship to IGMP and MLD Protocols ..............6
4.1.2. Gateways ............................................7
4.1.3. Relays .............................................10
4.1.4. Deployment .........................................13
4.1.5. Discovery ..........................................14
4.2. General Operation .........................................15
4.2.1. Message Sequences ..................................15
4.2.2. Tunneling ..........................................26
5. Protocol Description ...........................................31
5.1. Protocol Messages .........................................31
5.1.1. Relay Discovery ....................................31
5.1.2. Relay Advertisement ................................32
5.1.3. Request ............................................34
5.1.4. Membership Query ...................................35
5.1.5. Membership Update ..................................39
5.1.6. Multicast Data .....................................41
5.1.7. Teardown ...........................................43
5.2. Gateway Operation .........................................45
5.2.1. IP/IGMP/MLD Protocol Requirements ..................45
5.2.2. Pseudo-Interface Configuration .....................47
5.2.3. Gateway Service ....................................48
5.3. Relay Operation ...........................................61
5.3.1. IP/IGMP/MLD Protocol Requirements ..................61
5.3.2. Startup ............................................61
5.3.3. Running ............................................62
5.3.4. Shutdown ...........................................73
5.3.5. Response MAC Generation ............................73
5.3.6. Private Secret Generation ..........................74
6. Security Considerations ........................................74
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