Q-Logic 5000 Manuel D’Utilisation

5 – Diagnostics/Troubleshooting

Power-On Self Test Diagnostics

59096-04  A

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The switch performs a series of tests as part of its power-up procedure. The 
POST diagnostic program performs the following tests:
„

Checksum tests on the boot firmware in PROM and the switch firmware in 
flash memory

„

Internal data loopback test on all ports

„

Access and integrity test on the ASIC

During the POST, the switch logs any errors encountered. Some POST errors are 
critical, others are not. The switch uses the Heartbeat LED and the Logged-In 
LED to indicate switch and port status. A critical error disables the switch so that it 
will not operate. A non-critical error allows the switch to operate, but disables the 
ports that have errors. If two or more ports fail the POST, the entire switch is 
disabled. Whether the problem is critical or not, contact your authorized 
maintenance provider.

If there are no errors, the Heartbeat LED blinks at a steady rate of once per 
second. If a critical error occurs, the Heartbeat LED will show an error blink 
pattern and the System Fault LED will illuminate. If there are non-critical errors, 
the switch disables the failed ports and flashes the associated Logged-In LEDs. 
Refer to 

 for more information about 

Heartbeat LED blink patterns.

The Heartbeat LED indicates the operational status of the switch. When the POST 
completes with no errors, the Heartbeat LED blinks at steady rate of once per 
second. When the switch is in maintenance mode, the Heartbeat LED illuminates 
continuously. Refer to 

 for more information about maintenance mode. All other blink patterns 

indicate critical errors. In addition to producing a Heartbeat error blink patterns, a 
critical error also illuminates the System Fault LED.

The Heartbeat LED shows an error blink pattern for the following conditions:
„

1 blink - Normal operation

„

2 blinks - 

„

3 blinks - 

„

4 blinks - 

„

5 blinks -