This is one of those things I need to once in a while, and each time I have to do it, I need to re-look up how the steps. So these notes are mainly for my future self!
To factory reset a Cisco switch, when the password is unknown!
1. Obtain a console cable to connect to the switch. Typically the pale blue rj45 to serial cable, other times a Micro USB cable.
2. Open a terminal connection to the switch, on a PC I reccommend either Putty or TeraTerm.
3. Power on the Switch while holding the "Mode" button down; until the "syst" light will flash, and in the terminal window will show: "The password-recovery mechanism is enabled".
4. In the terminal window type: del flash:config.text
5. Then del flash:vlan.dat
6. Then reset
The system will reboot and have no configuration, it will present one with the wizard to setup new passwords and basic setup.
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