Re: Break Issue with 2620

inbedlam1 · ‎03-24-2011

Hi

I'm having a problem trying to issue a break so I can reset the router password

I already tried the key combinations from here

http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtml

& the precedure from here

http://www.cisco.com/en/US/products/hw/routers/ps259/products_password_recovery09186a0080094675.shtml

I get this in the event log

2011-03-24 15:34:58 Opening serial device COM3

2011-03-24 15:34:58 Configuring baud rate 9600

2011-03-24 15:34:58 Configuring 8 data bits

2011-03-24 15:34:58 Configuring 1 data bits

2011-03-24 15:34:58 Configuring no parity

2011-03-24 15:34:58 Configuring no flow control

2011-03-24 15:35:34 Starting serial break at user request

2011-03-24 15:35:35 Finished serial break

I'm running ios 12.0(7)T

& accessing through putty

Any help will be appreciated,

Thanks.

Vamsi Pinnaka · ‎03-25-2011

Can you post the output from console (putty or hyper terminal). Because I also faced the same issue. I tried with different baud rate, it worked for me. I don't remember exactly which baud rate worked for me. There 7 defferent rates

Regards

Vamsi Pinnaka

inbedlam1 · ‎03-25-2011

Hi i'm posting on behalf of a freind.

I did a bit of reasearch today & think they may have to change the baud rate like you did.

I found this forum where someone suggested 110.

http://www.sadikhov.com/forum/index.php?showtopic=145995

I already asked my freind to try that, when they get a chance, I will also get the putty output from them.

Only other thing I can think of it's the usb adapter they are using like it also says in that post, its probably not very good, either the driver

or the cable itself.

No substitue for a proper serial port on a pc sometimes.

Thaks for your suggestion anyway, its most appreciated.

I will post back with progress.

Vamsi Pinnaka · ‎03-26-2011

USB converter alway have problems. It crashes my windows 7 when I connect

Sent from Cisco Technical Support iPhone App

rkotabag · ‎03-31-2011

Hi Bob,

You could simulate a break sequence using this procedure.

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 this doesn't work, you would pull out the external compact flash card, do a hard-reset on your router. The router would definitely enter ROMMON mode after which the flash could be re-inserted back onto its slot.

Regards,

Rohit Kotabagi

zoltanszasz · ‎04-20-2011

Jumper J3 on the motherboard of the Cisco 2600 and 3600 Series Routers controls the speed reset. The factory default position of the shunt shorts pins 2-3. When the shunt is moved to pins 1-2, the console is reset to 9600 baud on the next power cycle. Look for jumper DUART_RST or BAUD_RST.