| RFC 9184 | BGP Extended Community Registries Update | January 2022 |
| Loibl | Standards Track | [Page] |
This document updates several BGP Extended Community registries in order to replace the "Experimental Use" registration procedure in some entries, since their use is clearly not experimental and is thus misleading.¶
This document updates RFCs 7153 and 8955.¶
This is an Internet Standards Track document.¶
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841.¶
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc9184.¶
Copyright (c) 2022 IETF Trust and the persons identified as the document authors. All rights reserved.¶
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The IANA registries for the type values and sub-type values of the BGP Extended Communities attribute were reorganized by [RFC7153]. As a result, IANA maintains a registry entitled "BGP Transitive Extended Community Types", which includes a range of type values (0x80-0x8F) reserved for Experimental Use [RFC8126]. Out of this experimental range, types 0x80, 0x81, and 0x82 have been used in [RFC5575] and [RFC7674] (both documents were rendered obsolete by [RFC8955]). The primary use for those types and the sub-type registries is non-experimental.¶
Section 2 describes updates to the registry to reflect the actual use of those code points by changing the registration procedure from "Experimental Use" to "First Come First Served" [RFC8126] for the types 0x80-0x82 (and removing "Experimental Use" from the sub-type registry names), thereby updating [RFC7153] and [RFC8955].¶
IANA maintains a registry entitled "BGP Transitive Extended Community Types". IANA has added RFC 9184 to the reference of this registry. They have also updated the name of the type values according to Table 1 and added RFC 9184 as a reference for the existing entries.¶
| Type Value | Name | Reference |
|---|---|---|
| 0x80 | Generic Transitive Extended Community (Sub-Types are defined in the "Generic Transitive Extended Community Sub-Types" registry) | RFC 9184 |
| 0x81 | Generic Transitive Extended Community Part 2 (Sub-Types are defined in the "Generic Transitive Extended Community Part 2 Sub-Types" registry) | RFC 9184 |
| 0x82 | Generic Transitive Extended Community Part 3 (Sub-Types are defined in the "Generic Transitive Extended Community Part 3 Sub-Types" registry) | RFC 9184 |
Furthermore, IANA has changed the registration procedures of this registry for type values 0x80 through 0x82 to First Come First Served [RFC8126]. The resulting registration procedures should read as in Table 2.¶
| Range | Registration Procedures |
|---|---|
| 0x00-0x3f | First Come First Served |
| 0x80-0x82 | First Come First Served (see RFC 9184) |
| 0x83-0x8f | Reserved for Experimental Use (see [RFC3692]) |
| 0x90-0xbf | Standards Action |
IANA maintains a registry entitled "Generic Transitive Experimental Use Extended Community Sub-Types". IANA has added RFC 9184 to the reference of this registry and updated the registry title to:¶
IANA maintains a registry entitled "Generic Transitive Experimental Use Extended Community Part 2 Sub-Types". IANA has added RFC 9184 to the reference of this registry and updated the registry title to:¶
IANA maintains a registry entitled "Generic Transitive Experimental Use Extended Community Part 3 Sub-Types". IANA has added RFC 9184 to the reference of this registry and updated the registry title to:¶
There are no direct security considerations arising from this document.¶
The author wants to thank Alvaro Retana, who pointed out that the IANA registry contains misleading entries in this context.¶