Fan Tray LEDs
The table below summarizes the fan tray LEDs.
A major alarm condition indicates the failure of a single fan in the fan tray; a critical alarm indicates the
failure of multiple fans. In the event that a single fan fails, the Cisco ASR 902 Router software adjusts
the fan speed to prevent excessive heat within the chassis.
Note
Table 40: Fan Tray LEDs
Description
Color/State
LED
Disabled/Power down
Off
Status (TEMP)
Over temperature
Amber
OK
Green
Fan rotation in range
Green
Fan (FAN)
Single Fan fault
Amber
Two or more fan faults
Red
No minor alarm
Off
Minor (MIN)
Minor alarm
Amber
No major alarm
Off
Major (MAJ)
Major alarm
Red
No critical alarm
Off
Critical (CRIT)
Critical alarm (defaults to ON upon
RSP reset)
Red
Alarm Conditions
The table below summarizes the meaning of the alarm conditions on the Cisco ASR 902 Router.
Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide
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Troubleshooting
Fan Tray LEDs