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Troubleshooting
System LEDs is not lit
Port link LED is not lit
Temperature sensor warning
Switch does not initialize (boot)
36
RackSwitch G8264T: Installation Guide
This section contains basic troubleshooting information to help resolve problems
that may occur during installation and operation of your switch. If you have
problems accessing the switch or working with the software, see the RackSwitch
G8264T Command Reference.
For information about calling IBM for service, see
assistance" on page
39.
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.
Symptom: The port link LED is not lit.
Solution 1: Check the port configuration in software (refer to your Command
Reference). If the port is configured with a specific speed or duplex mode, check
the other device to verify that it is set to the same configuration. If the switch port is
set to autonegotiate, make sure that the other device is set to autonegotiate.
Solution 2: Check the cables that connect the port to the other device. Make sure
that they are connected properly. Make sure that you are using the correct cable
type.
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's LED
(rear panel) blinks 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.
Symptom: All the switch LEDs stay on, and the command prompt is not displayed
on the console.
Solution: The operating system may have been damaged. Use the console port to
perform a serial upgrade of the switch software. See the Command Reference.
"Getting help and technical
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