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ROMmon--> Can't send the Break Signal--> USB Adapter?

Vasconcelos
Level 1
Level 1

I'll rate every post that helps

 

So, I've tryed the methods below to send the Break Signal to the Router in order to enter ROMmon and they aren't working

 

Putty

    - CTRL+ Pause (Only the Pause key is available)

    - Right-Click> Special Command> Break

    - Virtual Keyboard--> CTRL+ Pause (Only the Pause key is available)

 

Tried with SecureCRT and Tera Term also

 

I'm using a USB Adapter on the Console Cable (DB9)

 

Does someone know what might be the problem? 

7 Replies 7

Leo Laohoo
Hall of Fame
Hall of Fame
What kind of router?

 

Cisco 2611xm

Hello!

 

Did you try this?

 

CTRL + SHIFT + 6 + X

Enter

 

Please do not forget to rate useful post.

 

 

Best Regards,

Vasconcelos
Level 1
Level 1
Does anyone know?

Ben Walters
Level 3
Level 3

This might be related to the configuration register of the device, some of them make the router ignore break.

 

I am guessing you aren't able to get into the router which is why you want to boot to ROMmon in the first place. If you are able to configure the router you may want to check the register and then change it.

 

Here is more info:

https://www.cisco.com/c/en/us/support/docs/routers/10000-series-routers/50421-config-register-use.html

Makkakaz
Level 1
Level 1

How to Simulate a Break Key Sequence

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:

  1. 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.

  2. 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.

  3. 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.

 

More detailed info you could find here

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