IPv6 Multicast Address Scopes
RFC 7346
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Type |
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RFC - Proposed Standard
(August 2014; Errata)
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Author |
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Ralph Droms
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Last updated |
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2020-07-25
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IETF
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Submitted to IESG for Publication
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Document shepherd |
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Ole Trøan
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(last changed 2014-05-05)
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IESG state |
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RFC 7346 (Proposed Standard)
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Brian Haberman
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) R. Droms
Request for Comments: 7346 Cisco
Updates: 4007, 4291 August 2014
Category: Standards Track
ISSN: 2070-1721
IPv6 Multicast Address Scopes
Abstract
This document updates the definitions of IPv6 multicast scopes and
therefore updates RFCs 4007 and 4291.
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/rfc7346.
Droms Standards Track [Page 1]
RFC 7346 IPv6 Multicast Address Scopes August 2014
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
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.
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
1. Introduction
RFC 4291 [RFC4291] defines "scop" as "a 4-bit multicast scope value
used to limit the scope of the multicast group" and defines "scop 3"
as "reserved". The multicast protocol specification in [MPL] desires
to use multicast scop 3 to transport multicast traffic scoped to a
network of nodes connected in a mesh. This scop value is used to
accommodate a multicast scope that is greater than Link-Local but is
also automatically determined by the network architecture.
Droms Standards Track [Page 2]
RFC 7346 IPv6 Multicast Address Scopes August 2014
2. Definition of IPv6 Multicast Address Scopes (Updates RFC 4291)
The following table updates the definitions in [RFC4291]:
+------+--------------------------+-------------------------+
| scop | NAME | REFERENCE |
+------+--------------------------+-------------------------+
| 0 | Reserved | [RFC4291], RFC 7346 |
| 1 | Interface-Local scope | [RFC4291], RFC 7346 |
| 2 | Link-Local scope | [RFC4291], RFC 7346 |
| 3 | Realm-Local scope | [RFC4291], RFC 7346 |
| 4 | Admin-Local scope | [RFC4291], RFC 7346 |
| 5 | Site-Local scope | [RFC4291], RFC 7346 |
| 6 | Unassigned | |
| 7 | Unassigned | |
| 8 | Organization-Local scope | [RFC4291], RFC 7346 |
| 9 | Unassigned | |
| A | Unassigned | |
| B | Unassigned | |
| C | Unassigned | |
| D | Unassigned | |
| E | Global scope | [RFC4291], RFC 7346 |
| F | Reserved | [RFC4291], RFC 7346 |
+------+--------------------------+-------------------------+
The following change is applied to Section 2.7 of [RFC4291].
OLD:
Admin-Local scope is the smallest scope that must be
administratively configured, i.e., not automatically derived from
physical connectivity or other, non-multicast-related
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