How to change Cisco Console Speed or Buad Rate on Cisco Devices

To connect Cisco device using Console port using any terminal emulation program needs to be set to the following specifications: Baud rate: 9600 bps, Data bits: 8, Parity: None, Stop bits: 1, Flow control: None. These are the default settings required for both the console and the auxiliary ports.

Advantages with Cisco Console Speed

Cisco devices console port default baud rate is 9600 bps, some Router models will allow you to increase the console speed up to 115200. Increasing the console speed has its advantages.

  1. It will enhance the response time when typing at the console and will allow console messages to be sent to the console faster.
  2. It is very useful when you are upgrading the IOS through the console port from ROMmon Mode or Privilege EXEC Mode. It increases the transfer rate and reduces the transfer time.

Change Console Speed from Cisco Router Line Console Mode:

To change the console speed from Global configuration mode, you simply use the speed command in line-configuration mode for console 0. Once you change the console speed, you will no longer have console access through your existing terminal setting. You have to change the console setting on your terminal emulation program to match.

Configuration Example:

Router>enable
Router(config)#config-register 0x2102
Router(config)#line con 0
Router(config-line)# speed 115200

Change Console Baud Rate from Cisco ROMmon Mode:

To change the console speed from ROMmon mode, you simply use the confreg command and complete the instructions presented on the screen. Once you change the console speed, you will lose console access here also. You have to change the console setting on your terminal emulation (ex. Hyperterminal) program to match.

Configuration Example:
rommon 1 >confreg
Configuration Summary
enabled are:
break/abort has effect
console baud: 9600
boot: the ROM Monitor

do you wish to change the configuration? y/n [n]: y
enable “diagnostic mode”? y/n [n]:
enable “use net in IP bcast address”? y/n [n]:
enable “load rom after netboot fails”? y/n [n]:
enable “use all zero broadcast”? y/n [n]:
disable “break/abort has effect”? y/n [n]:
enable “ignore system config info”? y/n [n]:
change console baud rate? y/n [n]: y
enter rate: 0 = 9600, 1 = 4800, 2 = 1200, 3 = 2400
4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200 [0]: 7
change the boot characteristics? y/n [n]:
Configuration Summary
enabled are:
break/abort has effect
console baud: 115200
boot: the ROM Monitor
do you wish to change the configuration? y/n [n]:
You must reset or power cycle for new config to take effect.
rommon 2 >

Change Cisco 2960 Switch Baud Rate from ROMmon Mode

If you want to change  the console baud rate or speed of   Cisco catalyst 2960 Switch, use the below baud command.

Switch: set baud 115200

Filed Under: Cisco General

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  1. Jaxon says:

    Nice article! Thank you for your contribution to the R& S community! We had occasion in our shop to use this info today and glad that you had published it!

  2. Touseef says:

    Thnx for the Great information Guys.

    But I am unable to set back BAUD rate to 9600. I gave set BAUD 9600 command.

    When I am in bootloader is works on 9600. when the ios is loaded it works only on 115200.

  3. Kevin says:

    I just tried my original thoughts on a 1750 I have under my desk. The config-register method does not work, even allowing for my mis-spelling of the command (it should be ‘config-register 0x2102’).

    I guess there is an issue with 17xx IOS that does that.

    The speed command is correct.

  4. Jason says:

    I have changed the baud rate from Rommon mode from Cisco Router. Thanks

  5. Ravi says:

    Thanks for the detailed instructions to set cisco console speed 115k. I tried to do it with 9600 bauds and I gave up.

  6. Raj says:

    Thank you so much for this information.

    It worked wonderful on a Cisco Switch to upgrade Cisco IOS.

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