06-01-2010 06:37 PM - edited 03-04-2019 08:39 AM
hello
the " password recovery functionality is disabled " service is running on the system .
im trying to access rommon in a Cisco 851, with not much success, i am sending a break after the image is loaded ( in the time frame that is allowed for that) .
am missing on something here ?
thank you for the help
Guy
06-01-2010 07:01 PM
http://www.heinzulm.com/password.php
Please don't forget to rate useful posts. Thanks.
06-01-2010 10:01 PM
I followed the different instruction and enter the break at a different point, but the system still did not receive my break..
06-02-2010 11:52 AM
0x1202 1200 baud
0x2101 Boots to bootstrap; Ignores break; boots into ROM if no IOS; 9600 baud
0x2102 Ignores break; boots into ROM if no IOS; 9600 baud
0x2120 Boots into rommon; 19200 console
0x2122 Ignores break; boots into ROM if no IOS; 19200 baud
0x2124 Uses Netboot; ignores break; boots to ROM if no IOS; 19200 baud
0x2142 Ignores break; boots to ROM if no IOS; 9600 baud; ignore configuration
0x2902 Ignores break; boots to ROM if no IOS; 4800 baud
0x2922 Ignores break; boots to ROM if no IOS; 38400 baud
0x3122 Ignores break; boots to ROM if no IOS; 57600 baud
0x3902 Ignores break; boots to ROM if no IOS; 2400 baud
0x3922 Ignores break; boots to ROM if no IOS; 115200 baud
Please let me know if this was helpful.
Regards,
podhillo
06-02-2010 03:52 PM
He can't get into ROMmon so he can't enter the config-registry.
06-02-2010 04:21 PM
leolaohoo is right.. that service prevent me from getting the rommon running. I have tries sending a break in a few methods and in different stages of the boot process, at this point it seems to be unstoppable..
06-02-2010 06:58 PM
Hey,
You might want to try looking at this document and see if it works:
https://supportforums.cisco.com/docs/DOC-2407
Hope this helps,
Ross.
06-03-2010 05:04 AM
Software | Platform | Operating System | Try This |
---|---|---|---|
Hyperterminal | IBM Compatible | Windows XP | Ctrl-Break |
Hyperterminal | IBM Compatible | Windows 2000 | Ctrl-Break |
Hyperterminal | IBM Compatible | Windows 98 | Ctrl-Break |
Hyperterminal (version 595160) | IBM Compatible | Windows 95 | Ctrl-F6-Break |
Kermit | Sun Workstation | UNIX | Ctrl-\l |
Ctrl-\b | |||
MicroPhone Pro | IBM Compatible | Windows | Ctrl-Break |
Minicom | IBM Compatible | Linux | Ctrl-a f |
ProComm Plus | IBM Compatible | DOS or Windows | Alt-b |
SecureCRT | IBM Compatible | Windows | Ctrl-Break |
Telix | IBM Compatible | DOS | Ctrl-End |
Telnet | N/A | N/A | Ctrl-], then type send brk |
Telnet to Cisco | IBM Compatible | N/A | Ctrl-] |
Teraterm | IBM Compatible | Windows | Alt-b |
Terminal | IBM Compatible | Windows | Break |
Ctrl-Break | |||
Tip | Sun Workstation | UNIX | Ctrl-], then Break or Ctrl-c |
~# | |||
VT 100 Emulation | Data General | N/A | F16 |
Windows NT | IBM Compatible | Windows | Break-F5 |
Shift-F5 | |||
Shift-6 Shift-4 Shift-b (^$B) | |||
Z-TERMINAL | Mac | Apple | Command-b |
N/A | Break-Out Box | N/A | Connect pin 2 (X-mit) to +V for half a second |
Cisco to aux port | N/A | Control-Shft-6, then b | |
IBM Compatible | N/A | Ctrl-Break |
Problems that you encounter during password recovery often occur because you are not sure about what the break key sequence is for the (non-Cisco) software you use. For software not listed in the table, and for additional information, refer to the documentation of the individual software packages.
The auxiliary (AUX) port is not active during the boot sequence of a router. Therefore, it is no use if you send a break through the AUX port. You need to have connection to the console port, and have these settings:
9600 baud rate
No parity
8 data bits
1 stop bit
No flow control
Some versions of Windows NT have hyperterminal software that cannot send the correct break key signal. Refer to http://www.hilgraeve.com/hyperterminal.html for more information and for an upgrade of the hyperterminal software.
In some cases, the break sequence might not get transmitted properly when using a USB/Serial converter cable. In such cases, use a keyboard with a different connector port (for example, a PS/2).
Break key sequence simulation is useful if your terminal emulator does not support the break key, or if a bug does not allow your terminal emulator to send the correct signal.
Note: The hyperterminal under Windows NT had this behavior in the past.
Complete these steps to simulate a break key sequence:
Connect to the router with these terminal settings:
1200 baud rate
No parity
8 data bits
1 stop bit
No flow control
You no longer see any output on your screen, and this is normal.
Power cycle (switch off and then on) the router and press the SPACEBAR for 10-15 seconds in order to generate a signal similar to the break sequence.
Disconnect your terminal, and reconnect with a 9600 baud rate. You enter the ROM Monitor mode.
If all these methods fail to properly send a break, retry the procedures from a different terminal or PC platform.
Regards,
podhillo
06-03-2010 08:25 AM
Hi,
Try to do the following, it may help....
1. console to router
2. power cycle the router
3. while rebooting press ctrl+shift+Paus Break key
It should work as I did recently to one of my 881G.
if not working try ctrl+Paus Break
Regards,
Naidu.
06-03-2010 01:37 PM
I am starting to think that maybe there is IOS loaded to the system,
Because i am prity sure that the break sequence is being transmited by the terminal program.
I thin that in that case the system is a really bas problem,
I have similar systems; is there anything that can be done with the other systems to help out this busted one ?
Thanks
06-03-2010 03:28 PM
The only time I see in this forum of individuals having difficult with Ctrl+Break is when they are using a USB-to-Serial adaptor/interface. You don't happen to use this, by chance, would you?
06-03-2010 04:27 PM
no , I'm using a standard rs-232 9 pin cable.
06-03-2010 03:27 PM
Good docu!
02-03-2012 07:28 PM
I got into the same situation and luckily found that the RESET button on the device is the solution.
Good luck !!
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