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Chapter 4 Troubleshooting
The following table provides information for users to easily troubleshoot problems by taking
actions based on the suggested solutions within.
Table 5:
Troubleshooting Table
Symptoms
Possible Causes
Suggested Solutions
SYSTEM LED is
Off
The switch is not
receiving power.
1. Check if correct power cord is connected
firmly to the switch and to the AC outlet socket.
2. Perform power cycling the switch by
unplugging and plugging the power cord back
into the switch.
3. If the LED is still off, try to plug power cord
into different AC outlet socket to make sure
correct AC source is supplied.
SYSTEM LED is
RED
An abnormal
state has been
detected by the
switch.
Check the system log within the switch
from WEB UI to understand the abnormal
state (e.g. exceeding operating
temperature range) and take
corresponding actions to resolve.
Port Status LED
is Off in the
Link/Act/Speed
Mode
The port is not
connected or the
connection is not
working.
1. Check if the cable connector plug is firmly
inserted and locked into the port at both the
switch and the connected device.
2. Make sure the connected device is up and
running correctly.
3. If the symptom still exists, try different cable or
different port, in order to identify if it is related to
the cable or specific port.
4. Check if the port is disabled in the
configuration settings via WEB user interface .
Port Status LED
is Off in the
PoE Mode
The port is not
supplying power
1. Check if the cable connector plug is firmly
inserted and locked into the port at both the
switch and the connected device.
2. Make sure the correct Ethernet cables are
used.
3. If the symptom still exists, try different cable or
different port, in order to identify if it is related to
the cable or specific port.
4. Check if the port is disabled in the
configuration settings via WEB user interface .
