NETGEAR GS724TPv3 Hardware Installation Manual page 34

24-Port Gigabit Ethernet (Hi-Power) PoE+ Smart Switch with 2 SFP Ports
Troubleshooting chart
The following table lists symptoms, possible causes, and possible solutions for problems
that might occur.
Table 5. Troubleshooting chart
Symptom
The Power LED is off.
When the LED Mode button
is set to Ethernet Mode, the
port LED for a port is off
although the port is
connected to a powered-on
device.
A file transfer is slow or
performance is degraded.
A segment or device is not
recognized as part of the
network.
When the LED Mode button
is set to Ethernet Mode, the
port LED for a port is off
although the port is
connected to a powered-on
device.
Troubleshooting
Possible Cause
Power is not supplied to the
switch.
The port connection is not
working.
One possible cause is that a
broadcast storm occurred and
that a network loop
(redundant path) was created.
One or more devices are not
properly connected, or
cabling does not meet
Ethernet guidelines.
A network loop (redundant
path) was created.
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Possible Solution
• Check the power cable connections at the
switch and the power source.
• Make sure that all cables are used correctly and
comply with the Ethernet specifications.
• Check the crimp on the connectors and make
sure that the plug is properly inserted and
locked into the port at both the switch and the
connecting device.
• Make sure that all cables are used correctly and
comply with the Ethernet specifications.
• Check for a defective port, cable, or module
by testing them in an alternate environment
where all products are functioning.
Break the loop by making sure that only one path
exists from any networked device to any other
networked device. After you connect to the switch
web management interface, you can configure
the Spanning Tree Protocol (STP) to prevent
network loops.
• Verify that the cabling is correct.
• Make sure that all connectors are securely
positioned in the required ports. It is possible
that equipment was accidentally disconnected.
Break the loop by making sure that only one path
exists from any networked device to any other
networked device. After you connect to the switch
web management interface, you can configure
the Spanning Tree Protocol (STP) to prevent
network loops.
Hardware Installation Guide