Reset Cisco Router to Factory Defaults

Summary:

To reset a cisco router to the factory state in case of the need for new and fresh configurations

Requirements:

get into “enable” mode (type ‘ena’ and then the enable password)

Procedures:

the easy way to do this is:

• check the on the router and make sure it is set to 0×2102, if not type the following commands:

     router# configure terminal
     router(config)# config-register 0x2102
     router(config)# end
     router#

• after setting the config register to 0×2102 we need to erase the current configuration on the router, we use the command erase
• after the command completes we use the command reload to reboot the router AND WE DON’T SAVE WHEN WE ARE PROMPTED TO DO SO
• after reload the router will be reset to its defaults with new fresh settings

References:

http://www.cisco.com/en/US/products/sw/iosswrel/ps5187/products_tech_note09186a00802017a1.shtml