recovery

If you have forgotten the enable password to a Cisco 1800 series router you will need to recover it. This document discusses how to do that.

Requirements

Physical access to the router
A PC with a Serial Port
A Cisco rollover / console cable (the blue type)
A copy of Hyper-terminal or Putty. Hyper-terminal comes with windows and putty is a free download. For this article I will use putty.

Step 1.

Plug the Cisco console cable from your PC's serial port to the console port of the Cisco 1800.

When recovering a Cisco 3750 a flash error can occur

If you ever have to recover a Cisco 3750 switch or switch stack password there are some good instructions on the cisco web site on how to do this. However, part of the process involves accessing file(s) on the flash memory of the switch. Occasionally you might run into a problem when attempting to access the flash memory. The switch may report "unable to stat flash:/: invalid" argument.

For example when you type

you may receive and error which says