Border Gateway Protocol (BGP) Parameters Last Updated 2008-08-06 This registry is also available in XML and plain text formats. Registries included below * BGP Message Types * BGP Path Attributes * BGP Error Codes * BGP Error Subcodes * Message Header Error subcodes * OPEN Message Error subcodes * UPDATE Message Error subcodes * BGP Cease NOTIFICATION message subcodes * BGP Outbound Route Filtering (ORF) Types BGP Message Types Registration Procedures Standards Action process or the Early IANA Allocation process Reference [RFC4271] Value Name Reference 1 OPEN [RFC4271] 2 UPDATE [RFC4271] 3 NOTIFICATION [RFC4271] 4 KEEPALIVE [RFC4271] 5 ROUTE-REFRESH [RFC2918] BGP Path Attributes Registration Procedures Standards Action process or the Early IANA Allocation process Reference [RFC4271] Value Code Reference 1 ORIGIN [RFC4271] 2 AS_PATH [RFC4271] 3 NEXT_HOP [RFC4271] 4 MULTI_EXIT_DISC [RFC4271] 5 LOCAL_PREF [RFC4271] 6 ATOMIC_AGGREGATE [RFC4271] 7 AGGREGATOR [RFC4271] 8 COMMUNITY [RFC1997] 9 ORIGINATOR_ID [RFC4456] 10 CLUSTER_LIST [RFC4456] 11 DPA [Chen, E., Bates, T., "Destination Preference Attribute for BGP", Work in progress, March 1996.] 12 ADVERTISER [RFC1863] 13 RCID_PATH / [RFC1863] CLUSTER_ID 14 MP_REACH_NLRI [RFC4760] 15 MP_UNREACH_NLRI [RFC4760] 16 EXTENDED [Eric_Rosen][draft-ramachandra-bgp-ext-communities-00][RFC4360] COMMUNITIES 17 AS4_PATH [RFC4893] 18 AS4_AGGREGATOR [RFC4893] 19 SAFI Specific [Gargi_Nalawade][draft-kapoor-nalawade-idr-bgp-ssa-00][draft-nalawade-idr-mdt-safi-00][draft-wijnands-mt-discovery-00] Attribute (SSA) 20 Connector [Gargi_Nalawade][draft-kapoor-nalawade-idr-bgp-ssa-00][draft-nalawade-idr-mdt-safi-00][draft-wijnands-mt-discovery-00] Attribute AS_PATHLIMIT 21 (TEMPORARY - [draft-ietf-idr-as-pathlimit] Expires 27 October 2007) PMSI_TUNNEL 22 (TEMPORARY - [draft-ietf-l3vpn-2547bis-mcast-bgp] Expires 19 June 2008) 23-254 Unassigned 255 Reserved for development BGP Error Codes Registration Procedures Standards Action process or the Early IANA Allocation process Reference [RFC4271] Value Name Reference 1 Message Header Error [RFC4271] 2 OPEN Message Error [RFC4271] 3 UPDATE Message Error [RFC4271] 4 Hold Timer Expired [RFC4271] 5 Finite State Machine Error [RFC4271] 6 Cease [RFC4271] BGP Error Subcodes Registration Procedures Standards Action process or the Early IANA Allocation process Reference [RFC4271] Message Header Error subcodes Registration Procedures Standards Action process or the Early IANA Allocation process Reference [RFC4271] Value Name Reference 1 Connection Not Synchronized [RFC4271] 2 Bad Message Length [RFC4271] 3 Bad Message Type [RFC4271] OPEN Message Error subcodes Registration Procedures Standards Action process or the Early IANA Allocation process Reference [RFC4271] Value Name Reference 1 Unsupported Version Number [RFC4271] 2 Bad Peer AS [RFC4271] 3 Bad BGP Identifier [RFC4271] 4 Unsupported Optional Parameter [RFC4271] 5 [Deprecated] [RFC4271] 6 Unacceptable Hold Time [RFC4271] UPDATE Message Error subcodes Registration Procedures Standards Action process or the Early IANA Allocation process Reference [RFC4271] Value Name Reference 1 Malformed Attribute List [RFC4271] 2 Unrecognized Well-known Attribute [RFC4271] 3 Missing Well-known Attribute [RFC4271] 4 Attribute Flags Error [RFC4271] 5 Attribute Length Error [RFC4271] 6 Invalid ORIGIN Attribute [RFC4271] 7 [Deprecated] [RFC4271] 8 Invalid NEXT_HOP Attribute [RFC4271] 9 Optional Attribute Error [RFC4271] 10 Invalid Network Field [RFC4271] 11 Malformed AS_PATH [RFC4271] BGP Cease NOTIFICATION message subcodes Registration Procedures Standards Action or Early IANA Allocation process Reference [RFC4486] Value Name Reference 1 Maximum Number of Prefixes Reached [RFC4486] 2 Administrative Shutdown [RFC4486] 3 Peer De-configured [RFC4486] 4 Administrative Reset [RFC4486] 5 Connection Rejected [RFC4486] 6 Other Configuration Change [RFC4486] 7 Connection Collision Resolution [RFC4486] 8 Out of Resources [RFC4486] BGP Outbound Route Filtering (ORF) Types Reference [RFC5291] Range Registration Procedure Notes 0-63 Standards Action or the Early Allocation process [RFC4020] 64-127 First Come First Served 128-255 Vendor-Specific IANA does not assign Value Description Reference 0 Reserved [RFC5291] 1-63 Unassigned 64 Address Prefix ORF [RFC5292] 65-127 Unassigned 128-255 Reserved for Vendor-Specific [RFC5291] People ID Name Contact URI Last Updated [Eric_Rosen] Eric Rosen mailto:erosen&cisco.com 1999-03 [Gargi_Nalawade] Gargi Nalawade mailto:gargi&cisco.com 2004-02