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Chapter 5. Troubleshooting
This section contains basic troubleshooting information to help resolve problems
that might occur during installation and operation of the switch. If you have
problems accessing the switch or working with the software, see the RackSwitch
G8316 Command Reference.
For information about calling IBM for service, see Appendix A, "Getting help and
technical assistance," on page 55.
System LED is not lit
Symptom: The power supply LED is not lit.
Solution: Check the power supply to make sure that there is a proper connection
to the power source. Make sure that power is available from the power source.
Port link LED is not lit
Symptom: The port link LED is not lit.
Solution 1: Check the port configuration in the software (refer to the Command
Reference). If the port is configured with a specific speed or duplex mode, check
the other device to make sure that it is set to the same configuration. If the switch
port is set to auto-negotiate, make sure that the other device is set to
auto-negotiate.
Solution 2: Check the cables that connect the port to the other device. Make sure
that they are connected correctly. Make sure that you are using the correct cable
type.
Temperature sensor warning
Symptom: A temperature warning is displayed on the management console.
Solution: Make sure that the air circulation vents on the front, back, and sides of
the switch are free from obstruction by cables, panels, rack frames, or other
materials.
Make sure that all cooling fans inside the switch are running. A fan module LED
(rear panel) flashes if there is a failure of the fan. The following command displays
fan status:
show sys-info
If any fan stops during switch operation, contact Customer Support.
Switch does not initialize (boot)
Symptom: All the switch LEDs stay on, and the command prompt is not displayed
on the console.
Solution: The operating system might be damaged. Use the console port to
perform a serial upgrade of the switch software. See the Command Reference.
© Copyright IBM Corp. 2014
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