Similar to a question posed by Gerald Schoch [Paessler Support] in August 2014, "Why does the SNMP System Uptime sensor report wrong values?" my SNMP System Uptime sensor shows incorrect uptimes. In particular the system uptime resets to zero every 8days and 2hrs. The device being monitored in this case is an Ethernet module in a programmable logic controller rack:
Schneider Electric Modicon Quantum • 140 CPU 672 60 (processor) • 140 NOE 771 11 (Ethernet module) • 140 NRP 312 00 (fiber converter module)
Does the uptime sensor query the correct OID? How can I fix this wrong system uptime issue?