rommon recovery after password recovery functionality is disabled

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Danilo Dy Thu, 04/05/2007 - 08:38

Hi,

If break is disabled, turn the router OFF ( wait few seconds ), turn the router ON. Within 60 seconds, press the Break key ( not CTRL+Break ).

The terminal should display: rommon 2>

Enter confreg 0x142 to reset the configuration register: rommon 2> confreg 0x142

Initialize the router by entering the reset command: rommon 2> reset

Im afraid i still cant seem to get to rommon mode. This is the output as the IOS has become corrupt.

System Bootstrap, Version 12.3(8r)YI3, RELEASE SOFTWARE

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 2006 by cisco Systems, Inc.

C870 series (Board ID: 1-148) platform with 131072 Kbytes of main memory

PASSWORD RECOVERY FUNCTIONALITY IS DISABLED

No bootable image file: flash:/

Unable to open boot file

System Bootstrap, Version 12.3(8r)YI3, RELEASE SOFTWARE

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 2006 by cisco Systems, Inc.

C870 series (Board ID: 1-148) platform with 131072 Kbytes of main memory

PASSWORD RECOVERY FUNCTIONALITY IS DISABLED

No bootable image file: flash:/

Unable to open boot file

again thankyou in advance for any help given on the subject.

Here is the documentation i have used so far, none of it seems to work for me?

There are only a few methods you can use to recover from a lost password, but all of them destroy the start-up configuration.

Routers that have nonvolatile RAM (NVRAM) chips can be removed and reseated. The NVRAM is implemented with battery-backed up static RAM (SRAM). If you remove the SRAM, the contents of NVRAM are erased as well as the no service password-recovery configuration. Be sure to use proper anti-static procedures when you handle the NVRAM. Some of these routers are 3640 and 3660.

Other routers, such as the 1700, 2600, and 3620, use an electrically erasable programmable read-only memory (EEPROM) in order to hold the configuration. The EEPROM does not erase when you remove it.

Another method is to reload or boot the router with console access, and press CTRL-BREAK within five to ten seconds of the Cisco IOS software image decompressing or roughly when the "Image text-base:... " part of the banner begins. You are then prompted to reset the router to factory default (erase start-up configuration).

Or

Recovering a Device

To recover a device once the No Service Password-Recovery feature has been enabled, press the Break key within 5 seconds after the image decompresses during the boot. You are prompted to confirm the Break key action. When you confirm the action, the startup configuration is erased, the password-recovery procedure is enabled, and the router boots with the factory default configuration.

If you do not confirm the Break key action, the router boots normally with the No Service Password-Recovery feature enabled.

Examples

This section provides the following examples of the process:

? Confirmed Break

? Unconfirmed Break

Confirmed Break

PASSWORD RECOVERY FUNCTIONALITY IS DISABLED

program load complete, entry point: 0x80013000, size: 0x8396a8

Self decompressing the image :

######################################################################

###################################################################### [OK]

!The 5 second window starts now.

telnet> send break

telnet> send break

telnet> send break

Unconfirmed Break

PASSWORD RECOVERY FUNCTIONALITY IS DISABLED

telnet> send break

program load complete, entry point: 0x80013000, size: 0x8396a8

Self decompressing the image :

##################################################################################### [OK]

telnet> send break

telnet> send break

again any further help would be much appreciated.

woluwole Thu, 03/13/2008 - 13:31

Does anyone know of any how to article from Cisco or anyone on how to reset a Cisco 2600 Password or back to factory default ?

This is my screen dump below.

System Bootstrap, Version 12.1(3r)T2, RELEASE SOFTWARE (fc1)

Copyright (c) 2000 by cisco Systems, Inc.

C2600 platform with 32768 Kbytes of main memory

PASSWORD RECOVERY FUNCTIONALITY IS DISABLED

program load complete, entry point: 0x80008000, size: 0x439138

Self decompressing the image :

#################################################

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