Hardware Reference
49
C613-03060-00 REV H
Power Supply LEDs
Each PSU has the following LEDs.
Table 15: LEDs on the AT-SB4441 8-port 1000BASE GBIC Line Card.
LED
State
Function
L/A
(Link/Activity)
Green
A link is open
Flashing Green
Activity is occurring
Amber
The port is operating at half-duplex. The L/A
LED for port 1 briefly lights at switch power up
or when the card is hot swapped in
Flashing Amber
Half-duplex activity is occurring
Off
No link is present
GBIC Status
Green
A GBIC is installed and enabled
Amber
A GBIC is installed but disabled
Flashing Amber
A fault is occurring on the link
Off
No GBIC is installed
Table 16: LEDs on the AT-SB4541 1-port 10GBASE-LR Line Card.
LED
State
Function
L/A
(Link/Activity)
Green
A link is open
Flashing Green
10GE activity is occurring
Off
No link is present
XFP
Green
An XFP is installed and enabled
Amber
An XFP is installed, but disabled.
Flashing Amber
An XFP is not ready, or faulty.
Off
No XFP is installed
Table: 17 LEDs on AC and DC variants of the AT-SB4161 PSU .
LED
State
Function
DC Good
Green
The PSU is supplying power to the switch
Fan Good
Green
The PSU’s fan is functioning
Power Present
Green
The PSU is receiving power from its supply
circuit.