8-1
Chapter 8
Troubleshooting
Use this chapter for troubleshooting the SSE-X3348T/SSE-X3348TR switch.
8-1 Diagnosing LED Indicators
8-2 System Self-Diagnostic Test Failure
If the Diag LED indicates a failure of the system power-on-self-test (POST), you can use
a console connection to view the POST results. The POST results may indicate a failed
component or help troubleshoot the problem. For more information on connecting to the
console port and using the CLI, refer to the Supermicro Switch CLI Reference Guide.
Note a POST failure normally indicates a serious hardware fault that cannot be rectified
or worked around. If you encounter a POST failure, you should contact your dealer for
assistance.
8-3 Power and Cooling Problems
If a power indicator does not turn on when the power cord is plugged in, you may have a
problem with the power outlet, power cord, or PSU. However, if the switch powers off
after running for a while, check for loose power connections, power losses or surges at
the power outlet. If you still cannot isolate the problem, the PSU may be defective.
Table 8-1. Troubleshooting Chart
Symptom Action
PSU1/PSU2 LED is Off
• Check connections between the PSU, the power cord and the
wall outlet.
• Contact your dealer for assistance.
PSU1/PSU2 LED is on Amber
• Power cycle the PSU to try and clear the condition.
• Replace the PSU.
Diag LED is on Amber
• Power cycle the switch to try and clear the condition.
• If the condition does not clear, contact your dealer for
assistance.
Fan LED is on Amber
• Check fans in the fan tray.
• Replace as soon as possible.
Link/Act LED is Off
• Verify that the switch and attached device are powered on.
• Be sure the cable is plugged into both the switch and
corresponding device.
• Verify that the proper cable type is used and its length does not
exceed specified limits.
• Check the attached device and cable connections for possible
defects. Replace the defective cable if necessary.
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