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IDR                                                          J. Snijders
Internet-Draft                                                    Fastly
Intended status: Standards Track                          3 January 2022
Expires: 7 July 2022


      Deprecation of BGP OPEN Message Error subcodes 8, 9, and 10.
                draft-spaghetti-idr-deprecate-8-9-10-00

Abstract

   This document requests IANA to mark BGP OPEN Message Error subcodes
   8, 9, and 10 as "deprecated".

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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   This Internet-Draft will expire on 7 July 2022.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   2
   3.  Security Considerations . . . . . . . . . . . . . . . . . . .   2
   4.  Informative References  . . . . . . . . . . . . . . . . . . .   2
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   3

1.  Introduction

   It has been discovered that certain BGP OPEN Message Error subcodes
   have been used in BGP implementations which have been deployed in the
   wild while not being assigned by the IANA for such usage.
   Unregistered usage of BGP OPEN Message Error subcodes can lead to
   increased difficulty when troubleshooting why BGP sessions are torn
   down.

   The use of these unregistered values was noticed when the concept of
   Route Leak Prevention and Detection using Roles in UPDATE and OPEN
   Messages [I-D.ietf-idr-bgp-open-policy] was initially assigned value
   8 by IANA.  It was subsequently discovered that a widely-deployed
   BGP-4 [RFC4271] implementation had released code which used BGP OPEN
   Message Error Subcode 8.  As a workaround, a new Early IANA
   Allocation is to be requested.

   The squatting of values 8, 9, and 10 has been confirmed by the
   involved vendors or through source code review.

2.  IANA Considerations

   Per this document, IANA is requested to mark values 8, 9, and 10 as
   "deprecated" in the "OPEN Message Error subcodes" registry under the
   "Border Gateway Protocol (BGP) Parameters" group.  The marking
   "deprecated" meaning "use is not recommended" ([RFC8126]).

3.  Security Considerations

   There are no meaningful security consequences arising from this
   registry update.

4.  Informative References










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Internet-Draft   Deprecation Of BGP OPEN Error subcodes     January 2022


   [I-D.ietf-idr-bgp-open-policy]
              Azimov, A., Bogomazov, E., Bush, R., Patel, K., and K.
              Sriram, "Route Leak Prevention and Detection using Roles
              in UPDATE and OPEN Messages", Work in Progress, Internet-
              Draft, draft-ietf-idr-bgp-open-policy-18, 4 December 2021,
              <https://www.ietf.org/archive/id/draft-ietf-idr-bgp-open-
              policy-18.txt>.

   [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>.

   [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>.

Author's Address

   Job Snijders
   Fastly
   Amsterdam
   Netherlands

   Email: job@fastly.com

























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