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Snijders 3 Internet-Draft Fastly 4 Intended status: Standards Track 3 January 2022 5 Expires: 7 July 2022 7 Deprecation of BGP OPEN Message Error subcodes 8, 9, and 10. 8 draft-spaghetti-idr-deprecate-8-9-10-00 10 Abstract 12 This document requests IANA to mark BGP OPEN Message Error subcodes 13 8, 9, and 10 as "deprecated". 15 Status of This Memo 17 This Internet-Draft is submitted in full conformance with the 18 provisions of BCP 78 and BCP 79. 20 Internet-Drafts are working documents of the Internet Engineering 21 Task Force (IETF). Note that other groups may also distribute 22 working documents as Internet-Drafts. The list of current Internet- 23 Drafts is at https://datatracker.ietf.org/drafts/current/. 25 Internet-Drafts are draft documents valid for a maximum of six months 26 and may be updated, replaced, or obsoleted by other documents at any 27 time. It is inappropriate to use Internet-Drafts as reference 28 material or to cite them other than as "work in progress." 30 This Internet-Draft will expire on 7 July 2022. 32 Copyright Notice 34 Copyright (c) 2022 IETF Trust and the persons identified as the 35 document authors. All rights reserved. 37 This document is subject to BCP 78 and the IETF Trust's Legal 38 Provisions Relating to IETF Documents (https://trustee.ietf.org/ 39 license-info) in effect on the date of publication of this document. 40 Please review these documents carefully, as they describe your rights 41 and restrictions with respect to this document. Code Components 42 extracted from this document must include Revised BSD License text as 43 described in Section 4.e of the Trust Legal Provisions and are 44 provided without warranty as described in the Revised BSD License. 46 Table of Contents 48 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 49 2. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 2 50 3. Security Considerations . . . . . . . . . . . . . . . . . . . 2 51 4. Informative References . . . . . . . . . . . . . . . . . . . 2 52 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 3 54 1. Introduction 56 It has been discovered that certain BGP OPEN Message Error subcodes 57 have been used in BGP implementations which have been deployed in the 58 wild while not being assigned by the IANA for such usage. 59 Unregistered usage of BGP OPEN Message Error subcodes can lead to 60 increased difficulty when troubleshooting why BGP sessions are torn 61 down. 63 The use of these unregistered values was noticed when the concept of 64 Route Leak Prevention and Detection using Roles in UPDATE and OPEN 65 Messages [I-D.ietf-idr-bgp-open-policy] was initially assigned value 66 8 by IANA. It was subsequently discovered that a widely-deployed 67 BGP-4 [RFC4271] implementation had released code which used BGP OPEN 68 Message Error Subcode 8. As a workaround, a new Early IANA 69 Allocation is to be requested. 71 The squatting of values 8, 9, and 10 has been confirmed by the 72 involved vendors or through source code review. 74 2. IANA Considerations 76 Per this document, IANA is requested to mark values 8, 9, and 10 as 77 "deprecated" in the "OPEN Message Error subcodes" registry under the 78 "Border Gateway Protocol (BGP) Parameters" group. The marking 79 "deprecated" meaning "use is not recommended" ([RFC8126]). 81 3. Security Considerations 83 There are no meaningful security consequences arising from this 84 registry update. 86 4. Informative References 88 [I-D.ietf-idr-bgp-open-policy] 89 Azimov, A., Bogomazov, E., Bush, R., Patel, K., and K. 90 Sriram, "Route Leak Prevention and Detection using Roles 91 in UPDATE and OPEN Messages", Work in Progress, Internet- 92 Draft, draft-ietf-idr-bgp-open-policy-18, 4 December 2021, 93 . 96 [RFC4271] Rekhter, Y., Ed., Li, T., Ed., and S. Hares, Ed., "A 97 Border Gateway Protocol 4 (BGP-4)", RFC 4271, 98 DOI 10.17487/RFC4271, January 2006, 99 . 101 [RFC8126] Cotton, M., Leiba, B., and T. Narten, "Guidelines for 102 Writing an IANA Considerations Section in RFCs", BCP 26, 103 RFC 8126, DOI 10.17487/RFC8126, June 2017, 104 . 106 Author's Address 108 Job Snijders 109 Fastly 110 Amsterdam 111 Netherlands 113 Email: job@fastly.com