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Checking references for intended status: Proposed Standard ---------------------------------------------------------------------------- (See RFCs 3967 and 4897 for information about using normative references to lower-maturity documents in RFCs) ** Obsolete normative reference: RFC 7752 (Obsoleted by RFC 9552) Summary: 1 error (**), 0 flaws (~~), 1 warning (==), 2 comments (--). Run idnits with the --verbose option for more detailed information about the items above. -------------------------------------------------------------------------------- 2 IDR Group A. Farrel 3 Internet-Draft Old Dog Consulting 4 Updates: 7752 (if approved) July 25, 2019 5 Intended status: Standards Track 6 Expires: January 26, 2020 8 Updates to the Allocation Policy for the Border Gateway Protocol - Link 9 State (BGP-LS) Parameters Registries 10 draft-farrel-idr-bgp-ls-registry-00 12 Abstract 14 RFC 7752 defines Border Gateway Protocol - Link State (BGP-LS). IANA 15 created a registry consistent with that document called the "Border 16 Gateway Protocol - Link State (BGP-LS) Parameters Registry" with a 17 number of sub-registries. The allocation policy applied by IANA for 18 those policies is "Specification Required" as defined in RFC 8126. 20 This document updates RFC 7752 by changing the allocation policy for 21 all of the registries to "Expert Review." 23 Status of This Memo 25 This Internet-Draft is submitted in full conformance with the 26 provisions of BCP 78 and BCP 79. 28 Internet-Drafts are working documents of the Internet Engineering 29 Task Force (IETF). Note that other groups may also distribute 30 working documents as Internet-Drafts. The list of current Internet- 31 Drafts is at https://datatracker.ietf.org/drafts/current/. 33 Internet-Drafts are draft documents valid for a maximum of six months 34 and may be updated, replaced, or obsoleted by other documents at any 35 time. It is inappropriate to use Internet-Drafts as reference 36 material or to cite them other than as "work in progress." 38 This Internet-Draft will expire on January 26, 2020. 40 Copyright Notice 42 Copyright (c) 2019 IETF Trust and the persons identified as the 43 document authors. All rights reserved. 45 This document is subject to BCP 78 and the IETF Trust's Legal 46 Provisions Relating to IETF Documents 47 (https://trustee.ietf.org/license-info) in effect on the date of 48 publication of this document. Please review these documents 49 carefully, as they describe your rights and restrictions with respect 50 to this document. Code Components extracted from this document must 51 include Simplified BSD License text as described in Section 4.e of 52 the Trust Legal Provisions and are provided without warranty as 53 described in the Simplified BSD License. 55 Table of Contents 57 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 58 2. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3 59 2.1. Guidance for Designated Experts . . . . . . . . . . . . . 3 60 3. Security Considerations . . . . . . . . . . . . . . . . . . . 4 61 4. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 4 62 5. Normative References . . . . . . . . . . . . . . . . . . . . 4 63 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 4 65 1. Introduction 67 Border Gateway Protocol - Link State (BGP-LS) [RFC7752] requested 68 IANA to create a registry consistent called the "Border Gateway 69 Protocol - Link State (BGP-LS) Parameters Registry" with a number of 70 sub-registries. The allocation policy applied by IANA for those 71 policies is "Specification Required" as defined in [RFC8126]. 73 The "Specification Required" policy requires evaluation of any 74 assignment request by a "Designated Expert" and guidelines for any 75 such experts are given in section 5.1 of [RFC7752]. In addition, 76 this policy requires "the values and their meanings must be 77 documented in a permanent and readily available public specification, 78 in sufficient detail so that interoperability between independent 79 implementations is possible" [RFC8126]. Further, the intention 80 behind "permanent and readily available" is that "a document can 81 reasonably be expected to be findable and retrievable long after IANA 82 assignment of the requested value" [RFC8126]. 84 It is often considered that it is the responsiblity of the Designated 85 Expert to make a determination as to whether a specification meets 86 the requirement to be permanent and readily publically available. A 87 degree of contention arises in this case because Internet-Drafts are 88 now permanently archived in the IETF&s tools archive, yet each such 89 document is marked with a piece of boilerplate text as follows that 90 brings doubt about its suitability as a permanent record: 92 Internet-Drafts are draft documents valid for a maximum of six 93 months and may be updated, replaced, or obsoleted by other 94 documents at any time. It is inappropriate to use Internet-Drafts 95 as reference material or to cite them other than as "work in 96 progress." 98 Another allocation policy called "Expert Review" is defined in 99 [RFC8126]. This policy also requires Expert Review, but has no 100 requirement for a formal document. 102 All reviews by Designated Experts are guided by advice given in the 103 document that defined the registry and set the allocation policy. 105 This document updates RFC 7752 by changing the allocation policy for 106 all of the registries to "Expert Review" and updating the guidance to 107 the Expert Review. 109 2. IANA Considerations 111 IANA maintains a registry called the "Border Gateway Protocol - Link 112 State (BGP-LS) Parameters Registry". This registry contains four 113 sub-registries: 115 o BGP-LS NLRI-Types 117 o BGP-LS Node Descriptor, Link Descriptor, Prefix Descriptor, and 118 Attribute TLVs 120 o BGP-LS Protocol-IDs 122 o BGP-LS Well-Known Instance-IDs 124 IANA is requested to change the assignment policy for each of these 125 registries to "Expert Review". 127 2.1. Guidance for Designated Experts 129 Section 5.1 of [RFC7752] gives guidance to Designated Experts. This 130 section replaces that guidance. It should be noted that the only 131 change to this guidance is the removal of the requirement of formal 132 documentation. 134 In all cases of review by the Designated Expert (DE) described here, 135 the DE is expected to check the clarity of purpose and use of the 136 requested code points. Last, the DE must verify that any 137 specification produced in the IETF that requests one of these code 138 points has been made available for review by the IDR working group in 139 the form of an Internet-Draft, and that any other request for a code 140 point does not conflict with work that is active or already published 141 within the IETF. 143 3. Security Considerations 145 The security consideratoin of [RFC7752] still apply. 147 Note that the change to the expert review guildelines make the 148 registry and the Designated Experts slightly more vulnerable to 149 denial of service attacks through excessive and bigus requests for 150 code points. It is expected that the registry cannot be effectively 151 attacked because the Designated Experts would, themselves, fall to 152 any such attack first. Designated Experts are expected to report to 153 the IDR working group chairs and responsible Area Director if they 154 believe an attack to be in progress, and should immediately halt all 155 requests for allocation. This may temporarily block all legitimate 156 risks until mitigations have been put in place. 158 This change in allocation policy should not have any effect on the 159 integrity of BGP-LS since there is no change to the review 160 requirements for the work that underlies the request. 162 4. Acknowledgements 164 This work is based on the IANA considerations section of [RFC7752]. 165 The author thanks the people who worked on that document. 167 The author would like to be able to thank John Scudder for suggesting 168 the need for this document. 170 5. Normative References 172 [RFC7752] Gredler, H., Ed., Medved, J., Previdi, S., Farrel, A., and 173 S. Ray, "North-Bound Distribution of Link-State and 174 Traffic Engineering (TE) Information Using BGP", RFC 7752, 175 DOI 10.17487/RFC7752, March 2016, 176 . 178 [RFC8126] Cotton, M., Leiba, B., and T. Narten, "Guidelines for 179 Writing an IANA Considerations Section in RFCs", BCP 26, 180 RFC 8126, DOI 10.17487/RFC8126, June 2017, 181 . 183 Author's Address 185 Adrian Farrel 186 Old Dog Consulting 188 Email: adrian@olddog.co.uk