Di default per connetersi in console con un router cisco bisogna impostare la porta console con i seguenti parametri:

Baud rate: 9600 bps, Data bits: 8, Parity: None, Stop bits: 1, Flow control: None

In alcuni casi può essere utile aumetare il baud rate, vedi quando per un disaster recovery si deve riuppare la ios tramite console.
Per fare questo ci sono due modi:

Da Cisco Ios con i comandi:

	Router(config)#line con 0 



	Router(config-line)#speed 115200 

Da Rommon con il comando:

		rommon 2 > confreg

			Configuration Summary
	enabled are:
	load rom after netboot fails
	console baud: 9600
	boot: image specified by the boot system commands
	or default to: cisco2-C3600
	do you wish to change the configuration? y/n  [n]:  y
	enable  "diagnostic mode"? y/n  [n]:   
	
	!--- Pressing "Enter" accepts the default (value between
	 the brackets).
	                                   
	enable  "use net in IP bcast address"? y/n  [n]:  
	disable  "load rom after netboot fails"? y/n  [n]:  
	enable  "use all zero broadcast"? y/n  [n]:  
	enable  "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  [7]:  7
	change the boot characteristics? y/n  [n]: 
	Configuration Summary
	enabled are:
	load rom after netboot fails
	console baud: 115200
	boot: image specified by the boot system commands
	or default to: cisco2-C3600
	do you wish to change the configuration? y/n  [n]:  
	You must reset or power cycle for new config to take effect
	 
	

Come dice il router  bisogna fare un reset  per rendere operative le modifiche