Topology view of Network Device (Relationship Viewer portlet) on USM shows incorrect alarm status
Network devices on topology view show critical status but when you click "Show Alarms" button, find nothing on USM page and the USM shows clear status of devices.
UIM 8.4 and later
This issue is fixed on nas 8.43 and later.
You will also need to add the key "add_dev_id_to_alarm_close = yes" to the nas.cfg "setup" section.