Automatic Multicast Tunneling
RFC 7450
Document | Type |
RFC - Proposed Standard
(February 2015; No errata)
Updated by RFC 8777
|
|
---|---|---|---|
Author | Gregory Bumgardner | ||
Last updated | 2018-12-20 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | No shepherd assigned | ||
Shepherd write-up | Show (last changed 2014-05-03) | ||
IESG | IESG state | RFC 7450 (Proposed Standard) | |
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Joel Jaeggli | ||
IESG note | Lenny Giuliano (lenny@juniper.net) is the Document Shepherd. | ||
Send notices to | (None) | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | RFC-Ed-Ack |
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 6.1. Relays ....................................................74 6.2. Gateways ..................................................76Show full document text