Password Recovery on 1800 series Router

Unanswered Question
rtjensen4 Tue, 04/27/2010 - 10:35
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Are you able to issue the break command?? Personally, I'd use hyperterminal, but you can use any terminal program you'd like.

Cntrl + Pause|Break key on keyboard will break out into ROMMON, but make sure you issue the break early in the boot sequence, before it starts to load the IOS.

Set config register to ignore startup config: confreg 0x2142

reset router : reset


Leo Laohoo Tue, 04/27/2010 - 15:24
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Try this:

1.  Power off the router;
2.  Pop the Compact Flash (CF) and USB flash drives;
3.  Power ON the router;

Due to the absence of the CF, the router should boot into ROMMON.

4.  Enter the command "confreg 0x2142";
5.  Insert the CF (which should contain a valid IOS);
6.  Enter the command "reset";
7.  After the router successfully reboots, copy the startup config to the running config using the command "copy start run";
8.  Change the password desired; and finally
9.  Don't forget to change the registry using the command "config-registry 0x2102".
10.  Save your config.


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