Lantronix
SISPM1040-xxxx-L3 Install Guide
33855 Rev. A
30
Troubleshooting Table
The following table provides information for users to easily troubleshoot problems by taking actions based on the
suggested solutions within.
Symptom
Possible Cause
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/DC outlet socket.
2. Power cycle the switch by unplugging and plugging the
power cord back into the switch.
3. If the LED is still off, plug power cord into a different AC/DC
outlet socket to make sure correct AC/DC 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.
RJ45 Ports left side
SFP Ports
SFP+ Ports
LED is Off
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.
RJ45 Ports right side
LED is Off
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.