Netgear FS750NA FS750 Reference Manual - Page 33

Symptom, Cause, Solution

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Symptom Cause Solution Link LED is off for a port There is a problem with this that has a connection. connection. Make sure the cable is attached securely at both ends. Make sure the cable is not damaged. Check that the device being connected to is powered on and operating correctly. If the connection is to a workstation, make sure the workstation's network interface is installed and configured correctly. File transfer is slow or performance degradation is a problem. Half- or full-duplex setting on the switch and the connected device are not the same. Make sure the attached device is set to auto negotiate. A segment or device is not recognized as part of the network. One or more devices are not properly connected, or cabling does not meet Ethernet guidelines. Verify that the cabling is correct. Be sure all connectors are securely positioned in the required ports. Equipment may have been accidentally disconnected. ACT LED is blinking yellow excessively. Collisions are occurring on the connected segment. Some collisions are normal when the connection is operating in half-duplex mode. Duplex modes are mismatched. Recheck the settings of the device attached to the RJ-45 port. Make sure the attached device is set to auto negotiate. ACT LED is flashing continuously on all connected ports and the network is disabled A network loop (redundant path) has been created (see Figures 2-3 and 2.4). Break the loop by ensuring that there is only one path from any networked device to any other networked device. troubleshooting 5-2

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troubleshooting
5-2
Symptom
Cause
Solution
Link
LED is off for a port
There is a problem with this
Make sure the cable is attached
that has a connection.
connection.
securely at both ends.
Make sure the cable is not damaged.
Check that the device being connected
to is powered on and operating
correctly.
If the connection is to a workstation,
make sure the workstation
’
s network
interface is installed and configured
correctly.
File transfer is slow or
Half- or full-duplex setting on
Make sure the attached device is set to
performance degradation
the switch and the connected
auto negotiate.
is a problem.
device are not the same.
A segment or device is
One or more devices are not
Verify that the cabling is correct. Be
not recognized as part
properly connected, or
sure all connectors are securely
of the network.
cabling does not meet
positioned in the required ports.
Ethernet guidelines.
Equipment may have been accidentally
disconnected.
ACT LED is blinking
Collisions are occurring
Some collisions are normal when
yellow excessively.
on the connected segment.
the connection is operating in
half-duplex mode.
Duplex modes are mismatched.
Recheck the settings of the device
attached to the RJ-45 port. Make
sure the attached device is set to
auto negotiate.
ACT LED is flashing
A network loop (redundant path)
Break the loop by ensuring that there
continuously on all
has been created
is only one path from any networked
connected ports and the
(see Figures 2-3 and 2.4).
device to any other networked device.
network is disabled