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CrossFire 8600/860 5 Token-Ring Switches v. 1. 2, P/N: 710001641 Troubleshooting
Procedure D
Use this procedure if one devi ce connect ed to the s witch is having a communic ation
problem. The ERR LED and the DIAG LEDs are off, and other attached devices
can communicate through the switch:
1. Check the port LEDs.
— If the port INSRT LED is on, the problem is probably external to the
switch. Go to Step 2.
— If the port INSRT LED is off, the port is probabl y disabl ed. Check that the
port configuration matches the attached device, and then go to Step 3.
2. If the INSRT LED on the fail ing 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 environm ent, check the segment cab ling 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 fail ed po r t . O bt a in
service. Contact your place of purchase.
3. Do the following:
— Using the console of the SNMP manager, check to see whether the f ai ling
port is disabled. If it is, enable it. A port will disable itself when the Cfg
Loss Threshold parameter is exceeded (see “Cfg Loss Threshold” on
page 108). 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. T ry mo ving th e cabl e
to another port until service can be arranged. If the switch can be
temporarily removed from service, connec t a consol e an d reset the switc h
with diagnostics to see whether the p ort p asses di ag nosti cs and i nit ializ es.
If it does not, the problem is in the switch. In this case, contact technical
support as described in Chapter 11, “Getting in Touch with Technical
Support”.
4. Restart communications program on the failed connected device.
— If the communication program appears to start without errors , obs erve 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 (page105) for possible causes of the failure.