Internet Assigned Numbers Authority Capability Codes Last Updated 2024-01-23 Available Formats [IMG] XML [IMG] HTML [IMG] Plain text Registries included below • Capability Codes • BGP Role Value Capability Codes Reference [RFC5492][RFC8810] Note The IETF will be the Change Controller for all future registrations. Available Formats [IMG] CSV Range Registration Procedures 1-63 IETF Review 64-238 First Come First Served 239-254 Experimental Use Value Description Reference Change Controller 0 Reserved [RFC5492] IETF 1 Multiprotocol Extensions for BGP-4 [RFC2858] IETF 2 Route Refresh Capability for BGP-4 [RFC2918] IETF 3 Outbound Route Filtering Capability [RFC5291] IETF 4 Multiple routes to a destination capability (deprecated) [RFC8277] IETF 5 Extended Next Hop Encoding [RFC8950] IETF 6 BGP Extended Message [RFC8654] IETF 7 BGPsec Capability [RFC8205] IETF 8 Multiple Labels Capability [RFC8277] IETF 9 BGP Role [RFC9234] IETF 10-63 Unassigned 64 Graceful Restart Capability [RFC4724] IETF 65 Support for 4-octet AS number capability [RFC6793] IETF 66 Deprecated (2003-03-06) IETF 67 Support for Dynamic Capability (capability specific) [draft-ietf-idr-dynamic-cap] IETF 68 Multisession BGP Capability [draft-ietf-idr-bgp-multisession] IETF 69 ADD-PATH Capability [RFC7911] IETF 70 Enhanced Route Refresh Capability [RFC7313] IETF 71 Long-Lived Graceful Restart (LLGR) Capability [RFC-ietf-idr-long-lived-gr-06] IETF 72 Routing Policy Distribution [draft-ietf-idr-rpd-04] IETF 73 FQDN Capability [draft-walton-bgp-hostname-capability] IETF 74 BFD Capability [draft-ietf-idr-bgp-bfd-strict-mode-08] IETF 75 Software Version Capability [draft-abraitis-bgp-version-capability-11] IETF 76 PATHS-LIMIT Capability [draft-abraitis-idr-addpath-paths-limit-00] IETF 77-127 Unassigned 128 Prestandard Route Refresh (deprecated) [RFC8810] IETF 129 Prestandard Outbound Route Filtering (deprecated), prestandard Routing [RFC8810] IETF Policy Distribution (deprecated) 130 Prestandard Outbound Route Filtering (deprecated) [RFC8810] IETF 131 Prestandard Multisession (deprecated) [RFC8810] IETF 132-183 Unassigned 184 Prestandard FQDN (deprecated) [RFC8810] IETF 185 Prestandard OPERATIONAL message (deprecated) [RFC8810] IETF 186-238 Unassigned 239-254 Reserved for Experimental Use [RFC8810] IETF 255 Reserved [RFC8810] IETF BGP Role Value Registration Procedure(s) IETF Review Reference [RFC9234] Available Formats [IMG] CSV Value Role name (for the local AS) Reference 0 Provider [RFC9234] 1 RS [RFC9234] 2 RS-Client [RFC9234] 3 Customer [RFC9234] 4 Peer (i.e., Lateral Peer) [RFC9234] 5-255 Unassigned Licensing Terms