After upgrade from UIM 20.33 to UIM 20.40 + LU04071 the alarm-routing-service queue stays yellow and does not drain alarms.
Do not see the message "Establishing connection to queue 'alarm'" in the trellis probe.
Release : DX UIM 20.4*
Component : UIM NAS
You don't need the alarm_routing_service probe any longer.
How to switch back from using EMS to using NAS again
https://knowledge.broadcom.com/external/article/199273/how-to-switch-back-from-using-ems-to-usi.html
In UIM 8.5.1, alarm_routing_service is an optional but not mandatory for Spectrum Gateway probe.