$ ssh ze-demo
Warning: stale-prefix-data has stale prefix data (updated 2024-01-01)
ze# run show health
ipsec  down  ike engine not running
ze# run show warnings source bgp
bgp  prefix-stale  warning  127.0.0.2  ... 2024-01-01
ze# run request peer 127.0.0.2 teardown 4
ze# run show errors source bgp
bgp  notification-sent  error  127.0.0.2  direction sent  code 6  subcode 4

Health reports aggregate component state. Warnings describe conditions that remain active and disappear when resolved. Errors retain discrete events. The login banner and filtered commands use the same report bus.