4-1
v1.0, February 2007
Chapter 4
Troubleshooting
Troubleshooting Chart
The following table lists symptoms, causes, and solutions of possible problems.
Table 4-1. Troubleshooting Chart
Problem
Cause
Solution
Power LED is off.
No power is received
Check the power cord connections
for the switch at the switch and the
connected device.
Make sure that 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.
Make sure that all cables used are
correct and comply with Ethernet
specifications. See Appendix A.
Check for a defective adapter
card, cable, or port by testing it in
an alternate environment where all
products are functioning.
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 that the attached
device is set to auto negotiate.
Check the system message log.
