Reset a Cisco VG224 Analog Voice Gateway or 1800 series router

The first method involves setting the configuration register to 0x2142. Most admins use this method to recover a password, but you can recover a password and wipe the configuration at the same time.

Follow these steps:
  • Log on to the router, and enter the privileged EXEC mode by entering enable and then entering the enable password command.
  • Enter configure terminal to go to Global Configuration Mode.
  • Enter config-register 0x2142. (This causes the router to ignore the startup configuration on the next reload.)
  • Enter end, and reload the router by entering reload at the Router# prompt.
  • The system will ask whether you want to save the configuration. Enter no, and confirm the reload at the next prompt.
  • After the router has reloaded, the system will ask whether you want to enter the initial configuration dialog. Enter no.
  • Change the configuration register setting to 0x2102 by entering enable and configure terminal to go back to Global Configuration Mode and then entering config-register 0x2102.
  • Enter end, and then enter write memory to overwrite the existing startup configuration with the current blank running configuration.
  • Enter reload to reload the router and complete the wiping operation.

However, if you already know the password to the router, you can use the second method. Follow these steps:
  • Log on to your router, and enter the privileged EXEC mode by entering enable and then entering the enable password command.
  • Enter configure terminal to go to Global Configuration Mode.
  • Enter config-register 0x2102.
  • Enter end, and then enter the write erase command to delete the current startup configuration on the router.
  • Enter reload to reload the router. When the system asks whether you want to save the configuration, enter no.
  • When the router reloads, it will reset back to the original factory defaults.

Comments

  1. DDJuly 5, 2020 at 11:12 AM

    How can you logon to the router and enter privileged exec mode in step one if you don't have the password?? It's kind of the whole point.

    ReplyDelete

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