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ROMMON Password Recovery for 803 Router

Hello Netpros.

Whilst attempting to perform a standard enable password recovery on an 803 router, I discovered that a ROMMON password had been set. This had the significant disadvantage in that I could not set the config register to bypass the configuration on startup using the set command.

I've browsed Google and this site and there seems to be some reference to a cookie and/or priv command that may assist with resetting a ROMMON password but this particular router does not seem to understand either of these commands whilst in disable mode.

Excerpt follows:

TinyROM version 1.0(2)

Mon Nov 02 17:14:21 1998

Copyright (c) 1998 by cisco Systems, Inc.

All rights reserved.

POST ......... OK. 8MB DRAM, 8MB Flash.

Booting up ..

auto-boot: failed, "user abort"

boot> set

set baud =9600

set data-bits =8

set parity =none

set stop-bits =1

set console-flags =0

set mac-address =0050.7377.4CCA

set unit-ip =0.0.0.0

set serv-ip =0.0.0.0

set netmask =0.0.0.0

set gate-ip =0.0.0.0

set pkt-timeout =8

set tftp-timeout =16

set boot-action =flash

set file-name ="c800-g3-mw.120-1.XB1"

set watchdog =off

set prompt ="boot"

set ios-conf =0x2102

boot> set ios-conf = 0x142

ios-conf: failed, "permission denied"

boot> en

password:

enable: failed, "permission denied"

boot> en

password:

enable: failed, "permission denied"

boot> cookie

cookie: failed, "command not found"

boot> priv

priv: failed, "command not found"

Hope one of you guys can help.

Adrian

1 ACCEPTED SOLUTION

Accepted Solutions

Re: ROMMON Password Recovery for 803 Router

Hi Adrian, what you need to do is;

boot> enable debug

password: em gubed

boot> [DANGER] passwd

new:

again:

boot> [DANGER] enable

boot#

boot#save

boot#

3 REPLIES

Re: ROMMON Password Recovery for 803 Router

Hi,

Yes, if you get this boot prompt with the ">" and not "#" that means some joker set a ROMMON password without reading the documentation what is the impact of that (and not documenting it as well). You have to contact Cisco TAC to clear that password, it's not written in any documentation how to clear it.

Regards,

Dandy

Re: ROMMON Password Recovery for 803 Router

Hi Adrian, what you need to do is;

boot> enable debug

password: em gubed

boot> [DANGER] passwd

new:

again:

boot> [DANGER] enable

boot#

boot#save

boot#

New Member

Re: ROMMON Password Recovery for 803 Router

Paul

Nice one. All fixed!

many thanks

Adrian

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