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4–Diagnostics/Troubleshooting
FC Port Diagnostics
59229-05 A 4-11
If the count for any of these errors exceeds the rising trigger for three consecutive
sample windows, the switch generates an alarm and disables the affected port,
changing its operational state to “down”. Port errors can be caused by the
following:
Triggers are too low or the sample window is too small
Faulty Fibre Channel port cable
Faulty SFP
Faulty port
Fault device or HBA
Review the event browser to determine if excessive port errors are responsible for
disabling the port. Look for a message that mentions one of the monitored error
types indicating that the port has been disabled, then do the following:
1. Examine the alarm configuration for the associated error using the
Show Config Threshold command or a management application. Are the
thresholds and sample window correct?
Yes - Continue
No - Correct the alarm configuration. If the condition remains, continue.
2. Reset the port, then perform an external port loopback test to validate the
port and the SFP. Does the port pass the test?
Yes - Continue
No - Replace the SFP and repeat the test. If the port does not pass the
test, contact your authorized maintenance provider. Otherwise
continue.
3. Replace the Fibre Channel port cable. Is the problem corrected?
Yes - Complete.
No - Continue.
4. Inspect the device to which the affected port is connected and confirm that
the device and its HBA are working properly. Make repairs and corrections
as needed. If the condition remains, contact your authorized maintenance
provider.