How to Erase Cisco 2600 Router Configuration

To erase your Cisco 2600 router configuration, type this command.

Router#erase startup-config

It will ask for confirmation. Press enter to confirm.

Erasing the nvram filesystem will remove all configuration files! Continue? [confirm]
[OK]
Erase of nvram: complete

Reload your routers configuration by typing this command:

Router#reload

Type no and press enter to confirm

System configuration has been modified. Save? [yes/no]: no
Proceed with reload? [confirm]

You can login to your CISCO router without password and start configuring it again.