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ZyXEL Communications 4728F User Manual

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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 (   )