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—If the port INSRT LED is off, the port is probably disabled. Check that the port configuration matches the attached device, and then go to Step 3.
2.If the INSRT LED on the failing port is on, and the attached device still cannot communicate:
—If the attached device is directly connected, it might be set up incorrectly. Go to step 4.
—In a shared environment, check the segment cabling and the media access unit.
—If problem persists, try another identically configured port on the switch. If the new port works there is a problem with the failed port. Obtain service. Contact your place of purchase.
3.Do the following:
—Using the console of the SNMP manager, check to see whether the failing port is disabled. If it is, enable it. A port will disable itself when the Config Loss parameter is exceeded (see “Cfg Loss Threshold” on page 107). This can be caused by poor cables, a faulty station connected to the switch, or a bad port on the switch.
—If the port is not disabled, disconnect the port cable. Try moving the cable to another port until service can be arranged. If the switch can be temporarily removed from service, connect a console and reset the switch with diagnostics to see whether the port passes diagnostics and initializes. If it does not, the problem is in the switch, call service.
4.Restart communications program on the failed connected device.
—If the communication program appears to start without errors, observe the INSRT LED on the switch port. If it is on, the problem may have gone away. Check the Cfg Loss Threshold parameter in the Port Configuration screen (page 106) for possible causes of the failure.
—If the problem persists, try another identically configured port on the switch. If the new port works there is a problem with the failed port. Obtain service. Contact your place of purchase.
5.If the switch is connected to a
—Verify that the switch duplex setting matches the attached device.
—Verify that the concentrator is operating correctly.
—Verify that only one cable interconnects the two devices. In other words, only one switch port should be connected to a port on the concentrator.
SmartStack | Troubleshooting |
