Dedicated or Interactive PPP

To dedicate a line for use by SLIP or PPP, the administrator can use the
async mode dedicated
command. This command prevents the user from changing the encapsulation protocol and can
augment security by restricting the method of access.
The interactive option, configured with the
async mode interactive
command, enables
the user to select any encapsulation for the session by entering a command in exec mode.

NOTE:The default for each interface is
no async mode
. As such, neither PPP nor SLIP
is available.