CISCO switch resumes factory settings
The switch forgot its password, it doesn't matter, return to the factory settings and start all over again.
Press and hold the switch's MODE button while the switch is powered on. Enter switch:
Enter flash_init
Del flash:config.txt
Del vlan.dat
Boot
Enter the following interface and reconfigure the switch password.
Aug 5 07 Line protocol on Interface FastEthernet0 57 changed state to down 03.491:% LINEPROTO-5-UPDOWN:
% Please answer 'yes' or' no'.
Would you like to enter the initial configuration dialog? [yes/no]: select no