System Health Monitoring
Other System Monitoring Considerations
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Best Practice User Guide for the Catalyst 3850 and Catalyst 3650 Switch Series
Other System Monitoring Considerations
Spanning Tree Monitoring
Spanning tree design is beyond the scope of this document, however, the goal of this procedure is to
provide simple spanning tree monitoring commands. It is important to always understand your spanning
tree topology within your network. There are a number of simple commands that you can run to verify
that your switch is performing the expected spanning tree role.
Step 9 Use the show spanning-tree summary command to periodically monitor the stability of your spanning
tree environment and ensure a loop-free environment.
This example output shows that the switch is actually operating as the root bridge for all of the VLANs
which can cause extreme network degradation if incorrectly configured.
show environment stack
SWITCH: 1
Switch 1 FAN 1 is OK
Switch 1 FAN 2 is OK
Switch 1 FAN 3 is OK
FAN PS-1 is OK
FAN PS-2 is OK
Switch 1: SYSTEM TEMPERATURE is OK
Inlet Temperature Value: 34 Degree Celsius
Temperature State: GREEN
Yellow Threshold : 41 Degree Celsius
Red Threshold : 56 Degree Celsius
Hotspot Temperature Value: 45 Degree Celsius
Temperature State: GREEN
Yellow Threshold : 105 Degree Celsius
Red Threshold : 125 Degree Celsius
SWITCH: 2
Switch 2 FAN 1 is OK
Switch 2 FAN 2 is OK
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