I am trying out the free version of PRTG. One of the basic tests I am doing is to check if SNMP polling is working from the PRTG station. The OID I am polling is 188.8.131.52.184.108.40.206 for sysName.
I can get a result using snmpwalk from CLI
snmpwalk -c public -v 2c x.x.x.x 220.127.116.11.2.1 DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (25303833) 2 days, 22:17:18.33
However, if I create a new probe with this OID (custom string), I get no responses. I know the IP address and community values are correct. I downloaded SNMPTester and it too fails to work. The failure code is "Value: No such instance (SNMP error # 223)". Any idea why I am not able to pull this OID from PRTG or from SNMPTester when snmp walk from CLI works fine?