bgp log-neighbor-changes
Causes BGP to log a message of severity notice to the bgpNeighborChanges log whenever a peer enters or leaves the Established state for any reason. No other messages are logged to the bgpNeighborChanges log. The no version disables this log.
[ no ] bgp log-neighbor-changes
Router Configuration
Release Information Command introduced before JUNOSe Release 7.1.0.