The snmptd probe throws an error when the probe starts.
When the Microsoft Windows snmptrap service (snmptrap.exe), is up and running and then you start the snmptd probe, you get an error in the snmptd.log:
Jun 25 17:30:24:547 [9956] snmptd: SNMP Trap Daemon thread started, port 162
Jun 25 17:30:24:547 [9956] snmptd: Error, EXIT THREAD, select returned error (2), port 162
Jun 25 17:30:24:547 [9956] snmptd: SNMP Trap Daemon thread stopped, port 162