8
Chapter 4
Troubleshooting
Troubleshooting Chart
The following table lists Issues, Causes, and Action to possible problems.
Table 4 Troubleshooting Chart
Issues
Cause
Action
SYSTEM LED Off
Power is not working.
Check the power cord connections for the
switch and the connected device.
Make sure that all cables used are correct
and comply with Ethernet specifications.
Link LED Off
Port connection is not working.
Check the crimp on the connectors.
Ensure that the plug is fully inserted
and locked into the port on both the
switch and the connected device.
Ensure that the correct cables are and
comply with Ethernet specifications.
Check for a defective adapter card,
cable, or port by testing it in an
alternate environment where all units
are functioning.
Slow file transfer
or performance
degradation.
Half- or full-duplex settings on
the switch and the connected
device are not the same.
Ensure that the attached device is set
to auto negotiate.
Check the system message log.
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 correct cabling is used.
Ensure that all connectors are securely
connected to the appropriate ports.
Equipment might have been accidentally
disconnected.