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Power module alarm LED
A PSR1600B-12A-B power module provides an alarm LED.
Table7-16 Description for the alarm LED on a PSR1600B-12A-B power module
Status
Description
Steady green
The power module is operating correctly and in active state.
Flashing green at 1 Hz
The power module is operating correctly and in standby state.
Flashing green at 2 Hz
The power module software is being upgraded.
Steady amber
The power module is faulty or has entered self-protection mode.
Flashing amber at 1 Hz
An alarm has occurred on the power module.
Flashing amber at 2 Hz
The power module does not have input power but the power
modules working in parallel with it have input power.
Off
Neither this power module nor power modules working in parallel
with it have input power.
Fan tray alarm LED
A FAN-80B-1-B fan tray provides an alarm LED.
Table7-17 Description for the alarm LED on a FAN-80B-1-B fan tray
Status
Description
Steady green
The fan tray is operating correctly.
Steady red
The fan tray is faulty.
Off
The fan tray is operating correctly or no power is present.
8
Appendix D Cooling system
CAUTION:
The chassis and power modules use separate air aisles. Make sure the two aisles are not blocked
when the switch is operating.
The switch uses a highly efficient front-rear air aisle cooling system to ensure adequate heat
dissipation and improve system reliability. Consider the ventilation design at the installation site
when you plan the installation location for the switch.
Table8-1 Fan tray options for the switch
Available fan tray
Airflow direction of the chassis
FAN-80B-1-B
From the port side to the power module side
