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5 – Diagnostics/Troubleshooting
POST Diagnostics
5-2 59021-05 A
5.1.1.2
Maintenance Mode Pattern
Steady illumination indicates that the switch is in maintenance mode, which
returns the switch IP address to 10.0.0.1. From maintenance mode, you may
reload firmware, reset the password to the factory default, and remove a corrupt
configuration.
5.1.1.3
Internal Firmware Failure Blink Pattern
An internal firmware failure blink pattern is 2 blinks per second followed by a two
second pause. The 2-blink error pattern indicates that the firmware has failed, and
that the switch must be reset. Power cycle the switch to reset it.
5.1.1.4
Fatal Error Blink Pattern
A fatal error blink pattern is 3 blinks per second followed by a two second pause.
The 3-blink error pattern indicates that a fatal error has left the switch inoperable.
If a fatal error occurs, contact your authorized maintenance provider.
5.1.1.5
Configuration File System Error Blink Pattern
A configuration file system error blink pattern is 4 blinks per second followed by a
two second pause. The 4-blink error pattern indicates that a configuration file
system error has occurred, and that the configuration file must be recreated. Refer
to ”Recovering a Switch” on page 5-12 for more information.
To recreate the configuration file, do the following:
1. Open a Telnet session and use the Shutdown command to close activity on
the switch, then power down the switch. Refer to the ”Shutdown Command”
on page B-65.
2 seconds
1 second
2 seconds
1 second
2 seconds
1 second