Configuring System Logging of BGP Peer State Transitions

Whenever a BGP peer makes a state transition, you can configure BGP so that it generates a syslog message. To do this, include the log-updown statement:

For a list of hierarchy levels at which you can include this statement, see the statement summary section for this statement.

Note: Enabling the log-updown statement causes BGP state transitions to be logged at warning level.