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Configuring common VTY line settings
For a VTY line, you can specify a command that is to be automatically executed when a user logs in.
After executing the specified command and performing the incurred task, the system automatically
disconnects the Telnet session. Before you configure this function and save the configuration, make sure
you can access the CLI through a different user line.
Typically, you configure the auto-execute command telnet X.X.X.X command on the device so the device
redirects a Telnet user to the host at X.X.X.X. In this case, the connection to the current device is closed
when the user terminates the Telnet connection to X.X.X.X.
To configure common settings for VTY lines:
Ste
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter VTY line view or
class view.
• Enter VTY line view:
line vty first-number
[ last-number ]
• Enter VTY line class view:
line class vty
A setting in user line view is applied only to the
user line. A setting in user line class view is
applied to all user lines of the class.
A non-default setting in either view takes
precedence over a default setting in the other
view. A non-default setting in user line view
takes precedence over a non-default setting in
user line class view.
A setting in user line view takes effect
immediately and affects the online user. A
setting in user line class view does not affect
online users and takes effect only for users who
log in after the configuration is completed.
3. Enable the terminal
service.
shell By default, terminal service is enabled.
4. Specify the protocols
for the user lines to
support.
protocol inbound { all | ssh
| telnet }
By default, both Telnet and SSH are supported.
This configuration is effective only for users who
log in to the user lines after the configuration is
completed.
In VTY line view, this command is associated
with the authentication-mode command. If you
specify a non-default value for only one of the
two commands in VTY line view, the other
command uses the default setting, regardless of
the setting in VTY line class view.
5. Define a shortcut key
for terminating tasks.
escape-key { character |
default }
By default, pressing Ctrl+C terminates a task.
6. Specify the terminal
display type.
terminal type { ansi | vt100 }
By default, the terminal display type is ANSI.
7. Set the maximum
number of lines to be
displayed on a screen.
screen-length screen-length
By default, up to 24 lines is displayed on a
screen.
A value of 0 disables the function.
8. Set the size of
command history
buffer.
history-command max-size
value
By default, the buffer saves 10 history
commands.
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