Im running a PRTG server and added a python mini probe for Linux to monitoring some devices of a network via snmp. Working fine with v1. If I set the snmp rule at root (top of PRTG) to snmp v3 all sensors going to be weak. Inside the settings of those sensors I found the old entry of community string (from v1 test). PRTG does not allow to delete the old entry. Everytime I try to do that, PRTG shows me "mandatory information". It isnt! I dont use v3-communitys (I know there is a possible way do to this but its not needed). All my network devices are configured right for snmp v3. Thats told me the Paessler SNMP Tester 5.2.3.
If I try to set up a new sensor, PRTG does same. Want everytime a cummunity string.
At wich point Im doing wrong?