Registry and Extensions for P-Multicast Service Interface Tunnel Attribute Flags
RFC 7902
| Document | Type |
RFC - Proposed Standard
(June 2016; No errata)
Updates RFC 6514
|
|
|---|---|---|---|
| Last updated | 2016-06-08 | ||
| Replaces | draft-rosen-bess-pta-flags | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Martin Vigoureux | ||
| Shepherd write-up | Show (last changed 2016-02-06) | ||
| IESG | IESG state | RFC 7902 (Proposed Standard) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Alvaro Retana | ||
| Send notices to | aretana@cisco.com | ||
| IANA | IANA review state | IANA OK - Actions Needed | |
| IANA action state | RFC-Ed-Ack | ||
Internet Engineering Task Force (IETF) E. Rosen
Request for Comments: 7902 Juniper Networks, Inc.
Updates: 6514 T. Morin
Category: Standards Track Orange
ISSN: 2070-1721 June 2016
Registry and Extensions for
P-Multicast Service Interface Tunnel Attribute Flags
Abstract
The BGP-based control procedures for Multicast Virtual Private
Networks (MVPNs) make use of a BGP attribute known as the
"P-Multicast Service Interface (PMSI) Tunnel" attribute. The
attribute contains a one-octet "Flags" field. The purpose of this
document is to establish an IANA registry for the assignment of the
bits in this field. Since the "Flags" field contains only eight
bits, this document also defines a new BGP Extended Community,
"Additional PMSI Tunnel Attribute Flags", that can be used to carry
additional flags for the "P-Multicast Service Interface (PMSI)
Tunnel" attribute. This document updates RFC 6514.
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/rfc7902.
Rosen & Morin Standards Track [Page 1]
RFC 7902 PMSI Tunnel Attribute Flags June 2016
Copyright Notice
Copyright (c) 2016 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.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Extending the "PMSI Tunnel" Attribute "Flags" Field . . . . . 3
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 5
4. Security Considerations . . . . . . . . . . . . . . . . . . . 6
5. Normative References . . . . . . . . . . . . . . . . . . . . 6
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 7
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 7
1. Introduction
A BGP attribute, "P-Multicast Service Interface (PMSI) Tunnel"
attribute is defined in [RFC6514]. This attribute, referred to as
the "PMSI Tunnel" attribute in this document, contains a one-octet
"Flags" field. Only one flag is defined in that RFC, but there is
now a need to define additional flags. However, that RFC did not
create an IANA registry for the assignment of bits in the "Flags"
field. This document creates a registry for that purpose. In
addition, there may be a need to define more than eight flags.
Therefore this document defines a new BGP Extended Community,
"Additional PMSI Tunnel Attribute Flags", that can be used to carry
additional flags for the "PMSI Tunnel" attribute. A registry is also
created for this Extended Community, allowing IANA to assign flag
bits from the Extended Community's six-octet value field.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
Rosen & Morin Standards Track [Page 2]
RFC 7902 PMSI Tunnel Attribute Flags June 2016
2. Extending the "PMSI Tunnel" Attribute "Flags" Field
In [RFC6514], only a single octet in the "PMSI Tunnel" attribute is
defined to carry bit flags. This allows eight flags, which is
unlikely to be sufficient for all future applications.
This document defines a new Transitive Opaque Extended Community
([RFC4360] [RFC7153]), "Additional PMSI Tunnel Attribute Flags". It
also defines a new bit flag in the "PMSI Tunnel" attribute "Flags"
field, called the "Extension" flag.
The "Additional PMSI Tunnel Attribute Flags" Extended Community MUST
NOT be carried by a given BGP UPDATE message unless the following
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