System information

Device Manager LEDs for AT-8401 Management Module
LED State Description
FAN A Green
Gray
FAN TRAY A is installed and is operating correctly.
FAN TRAY A is not installed.
FAN B Green
Gray
FAN TRAY B is installed and is operating correctly.
FAN TRAY B is not installed.
MASTER Green
Gray
The switch is the master of an enhanced stack.
The switch is either a slave switch of an enhanced stack
or the switch is not a member of an enhanced stack.
RPS Green
Gray
The switch is receiving power from the redundant power
supply (PWR B).
The switch is receiving power from the main power
supply (PWR A).
PWR Green
Gray (Only if
RPS is installed)
The switch is receiving power from the main power
supply (PWR A).
The main power supply is not functioning.
Note - Please refer to AT-8400 Line Cards for the operations and behavior of the line cards
installed on the chassis.
Note - The FAN A and FAN B LEDs are always green regardless of whether or not fan trays
are actually installed.
Note - The PWR LED is always green and the RPS LED is always gray regardless of whether
the switch is receiving power from the main power supply or the redundant power supply.
Note - Some parameters, when configured, may at times cause a temporary loss of
connection. When this happens, the following error message appears: "The error occurred
with 'Set' operation. Error: time out occurred.". This will not affect the application in any
way.
AlliedView™-EMS 3.8 DEVICE MANAGEMENT GUIDE Page 86 of 330