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.
- It will enhance the response time when typing at the console and will allow console messages to be sent to the console faster.
- 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 0×2102
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