Hello, I have Switch Giga Ports . I need to monitor it via PRTG. All the sensors working fine except the CPU sensor it didn't work. I have this OID 126.96.36.199.4.1.5188.8.131.52.1.13 for reading CPU load information. But this what appear to me " No such instance (SNMP error # 223) ". So what i can do for this issue .