Revision to Capability Codes Registration Procedures
draft-ietf-idr-capabilities-registry-change-09

Document Type Active Internet-Draft (idr WG)
Last updated 2020-08-03 (latest revision 2020-05-08)
Replaces draft-scudder-idr-capabilities-registry-change
Stream IETF
Intended RFC status Proposed Standard
Formats plain text xml pdf htmlized (tools) htmlized bibtex
Reviews
Stream WG state Submitted to IESG for Publication
Document shepherd Susan Hares
Shepherd write-up Show (last changed 2019-10-15)
IESG IESG state RFC Ed Queue
Consensus Boilerplate Yes
Telechat date
Responsible AD Alvaro Retana
Send notices to Susan Hares <shares@ndzh.com>, aretana.ietf@gmail.com, jgs@juniper.net
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
RFC Editor RFC Editor state AUTH48
Details
Network Working Group                                         J. Scudder
Internet-Draft                                          Juniper Networks
Updates: 5492 (if approved)                                  May 8, 2020
Intended status: Standards Track
Expires: November 9, 2020

          Revision to Capability Codes Registration Procedures
             draft-ietf-idr-capabilities-registry-change-09

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on November 9, 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

Scudder                 Expires November 9, 2020                [Page 1]
Internet-Draft  Capability Codes Registration Procedures        May 2020

   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

Scudder                 Expires November 9, 2020                [Page 2]
Internet-Draft  Capability Codes Registration Procedures        May 2020

   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.

   Since the range 128-255 was formerly designated Private Use,
   implementors may have chosen to use code points within that range
   prior to publication of this document.  For this reason, a survey was
   conducted beginning August 14, 2015 (version 01 of the individual
   draft) to find any such uses.  A number were contributed and were
Show full document text