SNMP hostextension property does not show any alarm at service builder dahsboard.
The SNMP host extension property is not displaying any alarm at health column on Service builder dashboard.
The SNMPHostExtension.host propety "is-containment" is false. That means no alarm propagation
and no containment semantics (there is ever so slight support for "give me all x (recursively) contained in y" based
on containment). The alarms from host would not propagate to SNMPHostExtension object.
The product is working as designed, the correct use is Host object directly.
See the images in the attached PDF doc.
We suggest customer to change their Custom service to use Host instead of SNMPHostExtension.