Allied Telesis AT-8550SP - Manual (Page 34)

Overview
34
System LEDs
The system LEDs on the front panel display general status information,
as described in Table 7.
Table 7 System LEDs
LED State Description
FAULT
or FLT OFF Indicates normal operation.
Red Indicates that the management software is
saving a change to its configuration. The LED
goes off once the configuration has been
saved.
If the FAULT LED remains on, the switch or
management software may have experienced
a malfunction. Refer to Troubleshooting on
page 72 for instructions on how to
troubleshoot a problem.
MASTER
or MSTR Green Indicates that the switch is functioning as the
master switch of an enhanced stack.
OFF Indicates that the switch is a slave switch or is
not a member of a stack.
RPS Green Indicates that an optional redundant power
supply is connected to the switch.
OFF Indicates that there is no optional redundant
power supply connected to the switch.
PWR Green Indicates that the switch is receiving power.