forgot router password...connect with console to pc

[malai.joseph]

Have a cisco router 1921 ,version 15.0,configuration register is 0x2102
and did not remember the password
try to solve by
GW-RTR>confreg 0x2142
give error    translating "confreg"....domain server (196.46.100.2) (196.46.104.2)
%Bad IP address or host name
translating "confreg"....domain server (196.46.100.2) (196.46.104.2)
%Unknown command or computer name, or unable to find computer address

also tried this

GW-RTR>confreg 0x2102
give error    translating "confreg"....domain server (196.46.100.2) (196.46.104.2)
%Bad IP address or host name
translating "confreg"....domain server (196.46.100.2) (196.46.104.2)
%Unknown command or computer name, or unable to find computer address

what are the way forward to get to default settings?
thx
J

[Jon Marshall · Accepted solution]

Joseph

You can't do it that way because to change the config-register you need to be in configuration mode ie. enter enable password and then "conf t" but you can't get to config mode because you don't have the enable password.

So you need to do a password recovery, see this doc for how to do this -

1900 ISR password recovery

Jon

[Latchum Naidu · Accepted solution]

Hi Joseph,

By changing the config registery in Romon mode the problem will solve.

Please follow the below procedure which will help you. I did that recently and it worked fine.

http://www.cisco.com/en/US/products/hw/routers/ps221/products_password_recovery09186a0080094773.shtml

Please rate the all helpfull posts.
Regards,
Naidu.