Q-Logic 59021-05 Manuel D’Utilisation

5 – Diagnostics/Troubleshooting

POST Diagnostics

59021-05 A

5-7

The switch monitors a set of port errors and generates alarms based on 
user-defined sample intervals and thresholds. Refer to the SANbox2-8c/16 Switch 
Management User’s Guide for information about managing alarms. These port 
errors include the following:

■

CRC errors

■

Decode errors

■

ISL connection count

■

Login errors

■

Logout errors

■

Loss-of-signal errors

If the count for any of these errors exceeds the rising threshold for three 
consecutive sample intervals, the switch generates an alarm and disables the 
affected port, changing its operational state to “down”. Port errors can be caused 
by the following:

■

Thresholds are too low or the sample interval is too small

■

Faulty Fibre Channel port cable

■

Faulty SFP

■

Faulty port

■

Fault device or HBA

Review the alarm log 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 the SANbox Manager application. Refer to 
the 

. Refer to 

 for a list of 

the alarm configuration defaults. Are the thresholds and sample interval 
correct?

■

Yes - Continue

■

No - Correct the alarm configuration. If the condition remains, continue.