Filter
Top Products
218
SmartStack STS16-20D/STS16-20R Token Ring Switches Installation and User Guide Troubleshooting
— 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 token-ring concentrator, perform the following
steps:
— 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.