IBM 4002-Y2A, Installation And User Manual

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Chapter 6. Troubleshooting
Diagnosing switch indicators
Table 30. Troubleshooting chart
Symptom Action
Power LED is off
v
Internal power supply is disconnected.
v
Check connections between the switch, the power cord, and the
wall outlet.
v Contact Technical Support.
Power LED is amber Internal power supply has failed. Contact Technical Support.
Diag LED is amber
v
The switch self test has detected a fault.
v
Power cycle the switch to try and clear the condition. If the
condition persists, contact Technical Support.
Link LED is off
v
Verify that the switch and attached device are powered on.
v
Be sure the cable is plugged into both the switch and
corresponding device.
v
Verify that the proper cable type is used and its length does not
exceed specified limits.
v Check the adapter on the attached device and cable connections
for possible defects. Replace the defective adapter or cable if
necessary.
Power and cooling problems
If the 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 internal power supply.
However, if the unit powers off after running for a while, check for loose power
connections, power losses or surges at the power outlet, and verify that the fans on
the unit are unobstructed and running prior to shutdown. If you still cannot isolate
the problem, then the internal power supply may be defective. In this case, contact
Technical Support for assistance.
Installation
Verify that all system components have been properly installed. If one or more
components appear to be malfunctioning (such as the power cord or network
cabling), test them in an alternate environment where you are sure that all the
other components are functioning properly.
In-band access
You can access the management agent in the switch from anywhere within the
attached network using Telnet, a Web browser, or other network management
software. However, you must first configure the switch with a valid IP address,
subnet mask, and default gateway. If you have trouble establishing a link to the
management agent, check to see if you have a valid network connection. Then
verify that you entered the correct IP address. Also, be sure the port through which
you are connecting to the switch has not been disabled. If it has not been disabled,
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