Cisco Systems 200 Manual De Usuario

Monitoring Fan Status

Cisco Small Business 200 Series Smart Switch Administration Guide 

60

 

 

The Health page displays the fan status on all devices with fans. Depending on the 
model, there are one or more fans on a device. Some models have no fans at all.

On devices on which a temperature sensor is assembled, for protecting the device 
hardware in case it overheats, the following actions are performed by the device if 
it overheats and during the cool down period after overheating:

At least one temperature 
sensor exceeds the 
Warning threshold

The following are generated:

•

SYSLOG message

•

SNMP trap

At least one temperature 
sensor exceeds the Critical 
threshold

The following are generated:

•

SYSLOG message

•

SNMP trap

The following actions are performed:

•

System LED is set to solid amber (if hardware 
supports this).

•

Disable Ports — When the Critical 
temperature has been exceeded for two 
minutes, all ports will be shut down.

•

(On devices that support PoE) Disable the 
PoE circuitry so that less power is consumed 
and less heat is emitted.

Cool down period after the 
Critical threshold was 
exceeded (all sensors are 
lower than the Warning 
threshold - 2 °C). 

After all the sensors cool down to Warning 
Threshold minus 2 degree C, the PHY will be re-
enabled, and all ports brought back up.

If FAN status is OK, the ports are enabled.

(On devices that support PoE) the PoE circuitry is 
enabled.