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Chapter 3 Hardware Overview
XGS-4526/4528F/4728F User’s Guide
45
3.3 LEDs
The following table describes the LEDs.
Table 3 LEDs
LED
COLO
R
STATUS DESCRIPTION
BPS Green Blinking The system is receiving power from the backup power
supply.
On The backup power supply is connected and active.
Off The backup power supply is not ready or not active.
PWR Green On The system is turned on.
Off The system is off.
SYS Green Blinking The system is rebooting and performing self-diagnostic
tests.
On The system is on and functioning properly.
Off The power is off or the system is not ready/
malfunctioning.
ALM Red On There is a hardware failure.
Off The system is functioning normally.
S1
(XGS-
4528F or
XGS-
4728F)
Green On The Switch is connected to other switches in the stack on
Stacking Port 1.
Off The Switch is not connected to other switches in the
stack on Stacking Port 1.
S2
(XGS-
4528F or
XGS-
4728F)
Green On The Switch is connected to other switches in the stack on
Stacking Port 2.
Off The Switch is not connected to other switches in the
stack on Stacking Port 2.
System Status Displays
hourglas
s icon
The Switch is starting up.
Displays
Stack ID
number
The LED is showing the Stack ID number of the Switch.
1000Base-T Gigabit Ports ( )
1-24 Green Blinking The system is transmitting/receiving to/from a 10/1000
Mbps Ethernet network.
On The link to a 10/1000 Mbps Ethernet network is up.
Amber Blinking The system is transmitting/receiving to/from a 100 Mbps
Ethernet network.
On The link to a 100 Mbps Ethernet network is up.
Off The link to an Ethernet network is down.
1000Base-X Mini-GBIC Slots ( )