What is this?

This knowledgebase contains questions and answers about PRTG Network Monitor and network monitoring in general.

Learn more

PRTG Network Monitor

Intuitive to Use. Easy to manage.
More than 500,000 users rely on Paessler PRTG every day. Find out how you can reduce cost, increase QoS and ease planning, as well.

Free Download

Top Tags

View all Tags

Cisco Sensor System Health Temperatures doesn't show any Data




I enabled SNMP on my Cisco switches but Sensor System Health Temperatures doesn't show any data and it is grey...unknown state.....Please let me know how I can fix it?

cisco health snmp

Created on Sep 10, 2018 10:56:15 AM

1 Reply



Hi Sara,

Not every device supports temp sensors. I mentioned it before - you actually asked three times about Cisco switches and SNMP - please download a SNMP tester - please let us know the model of your Cisco switch and we will need to make sure your device supports the requested SNMP data and delivers valid data back.

Paessler offers such a tool as well here: https://www.paessler.com/tools/snmptester


Florian Rossmark


Created on Sep 11, 2018 1:44:50 PM

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.