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Reset Catalyst Switches Running Configuration Cisco

Cat2950# write erase
Erasing the nvram filesystem will remove all files! Continue? [confirm]y[OK]
Erase of nvram: complete
Cat2950#
Cat2950# reload

System configuration has been modified. Save? [yes/no]: no

!— Do not save the configuration at this prompt. Otherwise, the switch

!— reloads with the current running configuration and does not reset to default.

Proceed with reload? [confirm]y
Would you like to enter the initial configuration dialog? [yes/no]:n

At this stage, the switch configuration has reset to the factory defaults, with the exclusion of the VLAN information.

---->> Now remove the VLAN information

Cat2950# show vlan

Delete the VLAN information from Flash or NVRAM, and reload the switch.
Cat2950# delete flash:vlan.dat

Delete filename [vlan.dat]?
Delete flash:vlan.dat? [confirm]y
Cat2950# reload
Proceed with reload? [confirm]y
4w5d: %SYS-5-RELOAD: Reload requested

After reload, check the VLAN information with the show vlan command.

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