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 18.104.22.168.22.214.171.124 for sysName.
I can get a result using snmpwalk from CLI
snmpwalk -c public -v 2c x.x.x.x 126.96.36.199.2.1 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?