Netgear FS728TPv2 - ProSAFE 24 Port 10/100 Smart Switch with 4 Gigabit Ports and 24 PoE Ports ハードウェアマニュアル

Troubleshooting Chart

The following table lists symptoms, causes, and solutions of possible problems.

Power LED is off.

No power is received.

Check the power cord connections and the 
connected device. Ensure all cables used are correct 
and comply with Ethernet specifications.

Link LED is off or 
intermittent.

Port connection is not 
working.

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. 
Ensure all cables used are correct and comply with 
Ethernet specifications. Check for a defective PC 
adapter card, cable, or port by testing them in an 
alternate environment where all products are 
functioning.

File transfer is slow or 
performance degradation 
is a problem.

Half-duplex 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. Ensure all 
connectors are securely positioned in the required 
ports. Equipment may have been accidentally 
disconnected.

ACT LED is flashing 
continuously on all 
connected ports and the 
network is disabled.

A network loop 
(redundant path) has 
been created.

Break the loop by ensuring that there is only one 
path from any networked device to any other 
networked device.