Border Gateway Protocol (BGP) Parameters (last updated 13 April 2005) - 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 Message Types Assignments are made using either the Standard Action process or the Early IANA Allocation process. Value Name Reference ----- -------------- --------- 1 OPEN [RFC-ietf-idr-bgp4-26.txt] 2 UPDATE [RFC-ietf-idr-bgp4-26.txt] 3 KEEPALIVE [RFC-ietf-idr-bgp4-26.txt] 4 NOTIFICATION [RFC-ietf-idr-bgp4-26.txt] 5 ROUTE-REFRESH [RFC2918] BGP Path Attributes Assignments are made using either the Standard Action process or the Early IANA Allocation process. Value Code Reference ------ --------------------------------- --------- 1 ORIGIN [RFC-ietf-idr-bgp4-26.txt] 2 AS_PATH [RFC-ietf-idr-bgp4-26.txt] 3 NEXT_HOP [RFC-ietf-idr-bgp4-26.txt] 4 MULTI_EXIT_DISC [RFC-ietf-idr-bgp4-26.txt] 5 LOCAL_PREF [RFC-ietf-idr-bgp4-26.txt] 6 ATOMIC_AGGREGATE [RFC-ietf-idr-bgp4-26.txt] 7 AGGREGATOR [RFC-ietf-idr-bgp4-26.txt] 8 COMMUNITY [RFC1997] 9 ORIGINATOR_ID [RFC1998] 10 CLUSTER_LIST [RFC1998] 11 DPA [Chen] 12 ADVERTISER [RFC1863] 13 RCID_PATH / CLUSTER_ID [RFC1863] 14 MP_REACH_NLRI [RFC2283] 15 MP_UNREACH_NLRI [RFC2283] 16 EXTENDED COMMUNITIES [Rosen] [ext-communities] 17 NEW_AS_PATH [E.Chen] 18 NEW_AGGREGATOR [E.Chen] 19 SAFI Specific Attribute (SSA) [Nalawade] 20 Connector Attribute [Nalawade] 21-254 Unassigned 255 reserved for development BGP Error Codes Assignments are made using either the Standard Action process or the Early IANA Allocation process. Value Name Reference ----- ----------------------------- --------- 1 Message Header Error [RFC-ietf-idr-bgp4-26.txt] 2 OPEN Message Error [RFC-ietf-idr-bgp4-26.txt] 3 UPDATE Message Error [RFC-ietf-idr-bgp4-26.txt] 4 Hold Timer Expired [RFC-ietf-idr-bgp4-26.txt] 5 Finite State Machine Error [RFC-ietf-idr-bgp4-26.txt] 6 Cease [RFC-ietf-idr-bgp4-26.txt] BGP Error Subcodes Assignments are made using either the Standard Action process or the Early IANA Allocation process. Message Header Error subcodes: Value Name Reference ----- --------------------------------- --------- 1 Connection Not Synchronized [RFC-ietf-idr-bgp4-26.txt] 2 Bad Message Length [RFC-ietf-idr-bgp4-26.txt] 3 Bad Message Type [RFC-ietf-idr-bgp4-26.txt] OPEN Message Error subcodes: Value Name Reference ----- --------------------------------- --------- 1 Unsupported Version Number [RFC-ietf-idr-bgp4-26.txt] 2 Bad Peer AS [RFC-ietf-idr-bgp4-26.txt] 3 Bad BGP Identifier [RFC-ietf-idr-bgp4-26.txt] 4 Unsupported Optional Parameter [RFC-ietf-idr-bgp4-26.txt] 5 [Deprecated] [RFC-ietf-idr-bgp4-26.txt] 6 Unacceptable Hold Time [RFC-ietf-idr-bgp4-26.txt] UPDATE Message Error subcodes: Value Name Reference ----- --------------------------------- --------- 1 Malformed Attribute List [RFC-ietf-idr-bgp4-26.txt] 2 Unrecognized Well-known Attribute [RFC-ietf-idr-bgp4-26.txt] 3 Missing Well-known Attribute [RFC-ietf-idr-bgp4-26.txt] 4 Attribute Flags Error [RFC-ietf-idr-bgp4-26.txt] 5 Attribute Length Error [RFC-ietf-idr-bgp4-26.txt] 6 Invalid ORIGIN Attribute [RFC-ietf-idr-bgp4-26.txt] 7 [Deprecated] [RFC-ietf-idr-bgp4-26.txt] 8 Invalid NEXT_HOP Attribute [RFC-ietf-idr-bgp4-26.txt] 9 Optional Attribute Error [RFC-ietf-idr-bgp4-26.txt] 10 Invalid Network Field [RFC-ietf-idr-bgp4-26.txt] 11 Malformed AS_PATH [RFC-ietf-idr-bgp4-26.txt] References ---------- [RFC1771] Rekhter, Y., and Li, T., "A Border Gateway Protocol 4 (BGP-4)", RFC 1771, March 1995. [RFC1997] Chandra, R., Traina, P., and T. Li, "BGP Communities Attribute", RFC 1997, August 1996. [RFC1998] Bates, T., Chandra, R, "BGP Route Reflection An alternative to full mesh IBGP", RFC 1998, June 1996. [RFC1863] Haskin, D., "A BGP/IDRP Route Server alternative to a full mesh routing", RFC 1863, October 1995. [RFC2283] Bates, T., et al., "Multiprotocol Extensions for BGP-4", RFC 2283, February 1998. [RFC2918] E. Chen, "Route Refresh Capability for BGP-4", RFC 2918, September 2000. [RFC-ietf-idr-bgp4-26.txt] Y. Rekhter, T. Li, S. Hares, Eds., "A Border Gateway Protocol 4 (BGP-4)", RFC XXXX, Month Year. [ext-communities] S. R. Sangli, D. Tappan, Y. Rekhter, "BGP Extended Communities Attribute", work in progress (draft-ietf-idr-bgp-communities-08.txt). People ------ [Chen] Chen, E., Bates, T., "Destination Preference Attribute for BGP", Work in progress, March 1996. [E.Chen] Enke Chen, , August 2001 [Nalawade] Gargi Nalawade, , January 2004, February 2004. (draft-kapoor-nalawade-idr-bgp-ssa-00.txt) (draft-nalawade-idr-mde-safi-00.txt) (draft-wijnands-mt-discovery-00.txt) [Rosen] Eric Rosen , March 1999. (draft-ramachandra-bgp-ext-communities-00.txt) []