TABLE 102 show ip bgp neighbors output descriptions (continued)
Field Description
Last Update Time Shows the list of last time updates were sent and received for the
following:
• NLRIs
• Withdraws
Last Connection Reset Reason Shows the reason for ending the previous session with this neighbor. The
reason can be one of the following:
• No abnormal error has occurred.
• Reasons described in the BGP specications:
– Message Header Error
– Connection Not Synchronized
– Bad Message Length
– Bad Message Type
– OPEN Message Error
– Unsupported Version Number
– Bad Peer AS Number
– Bad BGP Identier
– Unsupported Optional Parameter
– Authentication Failure
– Unacceptable Hold Time
– Unsupported Capability
– UPDATE Message Error
– Malformed Attribute List
– Unrecognized Well-known Attribute
– Missing Well-known Attribute
– Attribute Flags Error
– Attribute Length Error
– Invalid ORIGIN Attribute
– Invalid NEXT_HOP Attribute
Last Connection Reset Reason
(continued)
• Reasons described in the BGP specications (continued):
– Optional Attribute Error
– Invalid Network Field
– Malformed AS_PATH
– Hold Timer Expired
– Finite State Machine Error
– Rcv Notication
– Reset All Peer Sessions
– User Reset Peer Session
– Port State Down
– Peer Removed
– Peer Shutdown
– Peer AS Number Change
– Peer AS Confederation Change
– TCP Connection KeepAlive Timeout
– TCP Connection Closed by Remote
TCP Data Stream Error Detected
Notication Sent Shows an error code corresponding to one of the following errors if the
device sends a Notication message from the neighbor. Some errors have
subcodes that clarify the reason for the error. The subcode messages are
listed underneath the error code messages, wherever applicable.
• Message Header Error
– Connection Not Synchronized
– Bad Message Length
– Bad Message Type
– Unspecied
Displaying BGP4 information
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