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  • in Hardware
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Reset a Cisco Catalyst Switch

Here is a summary of the commands needed to reset Cisco Catalyst Switches to factory defaults: 

# enter configuration mode
enable
# remove the startup configuration file
write erase
# remove the VLAN configuration
delete flash:vlan.dat
# then reboot the switch
reload

If there are other files that need to be deleted, run the following before issuing the reload command: 

show file information flash:?
delete flash:config.text.backup
delete flash:config.text.old
delete flash:*.old