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5 – Diagnostics/Troubleshooting
Recovering a Switch
59021-08 B 5-13
D
5.2.5
Power Supply Over Temperature LED is Illuminated
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 Section 6 Removal/Replacement. If
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 Section 6 Removal/Replacement. If the
condition remains, contact your authorized maintenance provider.
5.3
Recovering a Switch
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