The only way that the config files are renamed is if the user presses the mode button for more than 10 seconds. The LEDs will start blinking after 3 seconds, and after 10 seconds the config files will be renamed and the switch will reboot.
These are the message that occurs:
0:01:21: %SYS-7-NV_BLOCK_INIT: Initalized the geometry of nvram
00:01:21: %EXPRESS_SETUP-6-CONFIG_IS_RESET: The configuration is reset and the system will now reboot
00:01:22: %SYS-5-RELOAD: Reload requested
This is a way to clear the configuration from a reconfigured switch so that normal express setup can be used.
There is a bug related to this behaviour.
Bug Id CSCee75743.
You can check the details of this bug using the following link of bug toolkit.
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