Cisco Systems VG204 Manual De Usuario

Each command mode restricts you to a subset of commands. If you are having trouble entering a 
command, check the prompt, and enter the question mark (?) for a list of available commands. You might 
be in the wrong command mode or using the wrong syntax.

In the following example, notice how the prompt changes after each command to indicate a new 
command mode:

VG> enable

Password: <enable password>

VG# configure terminal

VG(config)# interface fastEthernet 0/0

VG(config-if)# line 0

VG(config)# exit

VG#

%SYS-5-CONFIG_I: Configured from console by console

The last message is normal and does not indicate an error. Press Return to get the 

VG# 

prompt.

You can press Ctrl-Z in any mode to immediately return to enable mode (

VG#

), instead of entering exit, 

which returns you to the previous mode.

If you want to undo a command you entered or disable a feature, enter the keyword no before most 
commands; for example, no ip routing.

You need to enter the copy running-config startup-config command to save your configuration changes 
to NVRAM, so the changes are not lost if there is a system reload or power outage. For example:

VG# copy running-config startup-config

Building configuration...

Global configuration

From the privileged 
EXEC mode, enter the 
configure terminal 
command.

VG(config)#

To exit to privileged 
EXEC mode, use the 
exit or end command, 
or press Ctrl-Z.

Interface configuration

From the global 
configuration mode, 
enter the interface type 
number command, such 
as 
interface fast ethernet
0/0.

VG(config-if)#

To exit to global 
configuration mode, use 
the exit command.

To exit directly to 
privileged EXEC mode, 
press Ctrl-Z.