Devices show up as type 'Event Model' with no network address even though they are in UIM with an IP and they are resolvable and pingable from Spectrum and UIM both forward and reverse lookup.
snmpgtw probe with any Spectrum and UIM version
Configuration issue
This behavior is sometimes seen when the suspect device is black listed in UIM.
To resolve this issue, Use steps per article UIM Discovered device does not show up in OC Inventory to unblack list the device if it is black listed