Monitoring rules and alarms are not deleted with their host (6474032)

When a host is removed from the Monitoring Console, the monitoring rules and alarms associated with its monitored components are not deleted automatically. This allows persistency of the rules and alarm states if you add the same host again.

Solution If you do not plan on adding that host again, use the Rule dialog to find and delete all rules associated with the host. Alarms that exist when the host is removed may be acknowledged but will remain in the Monitoring Console because the monitored attribute that triggered the alarm can no longer be accessed. To avoid leaving alarms in the acknowledged state, resolve all alarm conditions in a monitored component and acknowledge the alarms in the Monitoring Console before removing the host.