I'm currently attempting to set up temperature monitoring for some Cisco routers on our network, and am running into an issue. If I view the dashboard for a particular router, and select the "Hardware" option, I can see the Hardware Report showing three temperature sensors (switch 1 - temp sensor 1, green; switch 1 - temp sensor 2 - green; switch 1 - temp sensor 0, green). These appear to be reporting their respective temperatures correctly.

The problem occurs if I attempt to view the monitors for the router. The monitor "Cisco Temperature-Switch 1 - Temp Sensor 0, GREEN" is listed with a protocol of SNMP and a polling interval of 15 minutes. However, while all my other Performance Monitors are retrieving data as expected, this one is not, and I'm not entirely sure why. Any help anyone could provide on the issue would be greatly appreciated. Thanks in advance for your time.