Q-Logic SB2A-16B Manuel D’Utilisation

5 – Diagnostics/Troubleshooting

Recovering a Switch

59021-09 A

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The power supply Over Temperature LED illuminates to indicate that the power 
supply is overheating. If the power supply Over Temperature LED illuminates, do 
the following:

1.

Inspect the chassis fans. Are the intake openings clear? Are both fans 
operating and producing air flow?
„

Yes - Continue.

„

No - Remove any debris from fan intakes if necessary. Replace any 
fan that is not operating. Refer to 

the condition remains, continue.

2.

Consider the ambient air temperature near the switch and clearance around 
the switch. Make necessary corrections. If the condition remains, continue.

3.

Replace the power supply. Refer to 

. If the 

condition remains, contact your authorized maintenance provider.

A switch can become inoperable or unmanageable for the following reasons:

„

Firmware becomes corrupt

„

IP address is lost

„

Switch configuration becomes corrupt

„

Forgotten password

In these specific cases, you can recover the switch using maintenance mode. 
Maintenance mode temporarily returns the switch IP address to 10.0.0.1 and 
provides opportunities to do the following:

„

Unpack a firmware image file

„

Restore the network configuration parameters to the default values

„

Remove all user accounts and restore the Admin account name password to 
the default.

„

Copy the log file

„

Restore factory defaults for all but user accounts and zoning

„

Restore all switch configuration parameters to the factory default values

„

Reset the switch

„

Display firmware versions stored on the switch

„

Select the firmware image to activate