Installation Guide
QX-S5500 Series Ethernet Switches
LED
Port mode LED
Ethernet port status
LED
Description
Off
The port is not up.
Steady yellow
(duplex mode)
green
Steady
The port operates in full-duplex mode.
Flashing
The data is being sent and/or received on
the port.
yellow
Steady
The port operates in full-duplex mode.
Flashing
The data is being sent and/or received on
the port.
Flashing yellow (3 Hz)
POST failed on the port.
Off
The port is not up.
1.4.7 100/1000BASE-X SFP Port Status LED
NOTE:
At software Version 5.4.16 or later Version, when a loop was detected at the port where a loopback detection
feature is effective, while port mode is rate mode or duplex mode Ethernet Port Status LED flashes on and off
by the cycle for about 2 seconds greenly.
The port mode LED and the SFP port status LED together indicate the SFP port operation
status. Refer to Table 1-12 for details.
Table 1-12
100/1000BASE-X SFP port status LEDs description
LED
Port mode LED
Ethernet port status
LED
Description
100/1000 BASE-T
port status LED
Steady green
(rate mode)
green
Steady
The port operates at a rate of 1000 Mbps.
Flashing
The data is being sent and/or received on
the port.
Flashing yellow (3 Hz)
POST failed on the port.
Off
The port is not up.
Steady yellow
(duplex mode)
green
Steady
The port operates in full-duplex mode.
Flashing
The data is being sent and/or received on
the port.
Flashing yellow (3 Hz)
POST failed on the port.
Off
The port is not up.
1.4.8 Interface Module Status LED
Table 1-13
Interface module status LED description
LED
Status
Description
MOD1
MOD2
Steady green
The interface module is in the slot and operates normally.
Steady yellow
The inserted interface module type is incorrect or the interface
module fails.
Off
No interface module is installed.
1-11