Revision to Capability Codes Registration Procedures
draft-ietf-idr-capabilities-registry-change-08
The information below is for an old version of the document.
| Document | Type | Active Internet-Draft (idr WG) | |
|---|---|---|---|
| Author | John Scudder | ||
| Last updated | 2020-05-07 (Latest revision 2020-04-30) | ||
| Replaces | draft-scudder-idr-capabilities-registry-change | ||
| Stream | Internet Engineering Task Force (IETF) | ||
| Formats | plain text xml htmlized pdfized bibtex | ||
| Reviews |
GENART Last Call review
(of
-07)
Ready with Nits
|
||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Susan Hares | ||
| Shepherd write-up | Show Last changed 2019-10-15 | ||
| IESG | IESG state | IESG Evaluation::Revised I-D Needed | |
| Consensus boilerplate | Yes | ||
| Telechat date |
(None)
Needs 2 more YES or NO OBJECTION positions to pass. |
||
| Responsible AD | Alvaro Retana | ||
| Send notices to | Susan Hares <shares@ndzh.com>, aretana.ietf@gmail.com, jgs@juniper.net | ||
| IANA | IANA review state | IANA OK - Actions Needed |
draft-ietf-idr-capabilities-registry-change-08
Network Working Group J. Scudder
Internet-Draft Juniper Networks
Updates: 5492 (if approved) April 30, 2020
Intended status: Standards Track
Expires: November 1, 2020
Revision to Capability Codes Registration Procedures
draft-ietf-idr-capabilities-registry-change-08
Abstract
This document updates RFC 5492 by making a change to the registration
procedures for BGP Capability Codes. Specifically, the range
formerly designated "Reserved for Private Use" is divided into three
new ranges, respectively designated as "First Come First Served",
"Experimental Use" and "Reserved".
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on November 1, 2020.
Copyright Notice
Copyright (c) 2020 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
(https://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
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the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Discussion . . . . . . . . . . . . . . . . . . . . . . . . . 2
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3
4. Security Considerations . . . . . . . . . . . . . . . . . . . 4
5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 4
6. References . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.1. Normative References . . . . . . . . . . . . . . . . . . 5
6.2. Informative References . . . . . . . . . . . . . . . . . 5
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 5
1. Introduction
The Border Gateway Protocol uses a mechanism called "Capability
Advertisement" [RFC5492] to enable BGP peers to tell one another
about their optional protocol extensions. These so-called
"Capabilities" are signaled using code points called "Capability
Codes".
[RFC5492] designates the range of Capability Codes 128-255 as
"Reserved for Private Use". Subsequent experience has shown this to
be not only useless, but actively confusing to implementors.
Accordingly, this document revises the registration procedures for
the range 128-255, as follows, using the terminology defined in
[RFC8126]:
o 128-238: First Come First Served
o 239-254: Experimental Use
o 255: Reserved
The procedures for the ranges 1-63 and 64-127 are unchanged,
remaining "IETF Review" and "First Come First Served" respectively.
2. Discussion
The reason for providing an Experimental Use range is to preserve a
range for use during early development. Although there are few
practical differences between Experimental and Private Use, the
change both makes it clear that code points from this space should
not be used long-term or in shipping products, and reduces the
consumption of the scarce Capability Code space expended for this
purpose. Once classified as Experimental, it should be considered
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difficult to reclassify the space for some other purpose in the
future.
The reason for reserving the maximum value is that it may be useful
in the future if extension of the number space is needed.
3. IANA Considerations
IANA is requested to revise the "Capability Codes" registry in the
"Border Gateway Protocol (BGP) Parameters" group as follows.
Reference: [RFC5492] and this document.
Registration procedures:
+---------+-------------------------+
| Range | Registration Procedures |
+---------+-------------------------+
| 1-63 | IETF Review |
| 64-238 | First Come First Served |
| 239-254 | Experimental |
+---------+-------------------------+
Table 1
Note: a separate "owner" column is not provided because the owner of
all registrations, once made, is "IESG".
IANA is requested to perform the following new allocations within the
"Capability Codes" registry:
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+-------+--------------------------------------------+--------------+
| Value | Description | Reference / |
| | | Change |
| | | Controller |
+-------+--------------------------------------------+--------------+
| 128 | Prestandard Route Refresh (deprecated) | (this |
| | | document) |
+-------+--------------------------------------------+--------------+
| 129 | Prestandard Outbound Route Filtering | (this |
| | (deprecated), prestandard Routing | document) |
| | Policy Distribution (deprecated) | |
+-------+--------------------------------------------+--------------+
| 130 | Prestandard Outbound Route Filtering | (this |
| | (deprecated) | document) |
+-------+--------------------------------------------+--------------+
| 131 | Prestandard Multisession (deprecated) | (this |
| | | document) |
+-------+--------------------------------------------+--------------+
| 184 | Prestandard FQDN (deprecated) | (this |
| | | document) |
+-------+--------------------------------------------+--------------+
| 185 | Prestandard OPERATIONAL message | (this |
| | (deprecated) | document) |
+-------+--------------------------------------------+--------------+
| 255 | Reserved | (this |
| | | document) |
+-------+--------------------------------------------+--------------+
Table 2
4. Security Considerations
This revision to registration procedures does not change the
underlying security issues inherent in the existing [RFC5492] and
[RFC4271].
5. Acknowledgements
Thanks to Alia Atlas, Bruno Decraene, Martin Djernaes, Jie Dong, Jeff
Haas, Sue Hares, Acee Lindem, Thomas Mangin, and Tom Petch for review
and comments.
6. References
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6.1. Normative References
[RFC5492] Scudder, J. and R. Chandra, "Capabilities Advertisement
with BGP-4", RFC 5492, DOI 10.17487/RFC5492, February
2009, <https://www.rfc-editor.org/info/rfc5492>.
[RFC8126] Cotton, M., Leiba, B., and T. Narten, "Guidelines for
Writing an IANA Considerations Section in RFCs", BCP 26,
RFC 8126, DOI 10.17487/RFC8126, June 2017,
<https://www.rfc-editor.org/info/rfc8126>.
6.2. Informative References
[RFC1997] Chandra, R., Traina, P., and T. Li, "BGP Communities
Attribute", RFC 1997, DOI 10.17487/RFC1997, August 1996,
<https://www.rfc-editor.org/info/rfc1997>.
[RFC4271] Rekhter, Y., Ed., Li, T., Ed., and S. Hares, Ed., "A
Border Gateway Protocol 4 (BGP-4)", RFC 4271,
DOI 10.17487/RFC4271, January 2006,
<https://www.rfc-editor.org/info/rfc4271>.
Author's Address
John Scudder
Juniper Networks
1194 N. Mathilda Ave
Sunnyvale, CA 94089
USA
Email: jgs@juniper.net
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