You can use profiles to configure dynamic interfaces. A profile is a set of characteristics that can be dynamically assigned to interfaces. By using a profile, you reduce the management of a large number of interfaces by applying a set of characteristics to multiple interfaces.
When you are configuring a large number of interfaces with the same attributes at the higher layers, you can use a profile to factor out all the common attributes of each layer into one place. This action affects one or more dynamic layers of the interface column. After you define the static lower layers, you assign a profile to the highest static layer of the interface column.
When a dynamic interface is configured, the configuration data received from the RADIUS authentication server typically overrides configuration data obtained from a profile.
In contrast to static PPP interfaces (above which only dynamic IP interfaces can be created), static ATM 1483 subinterfaces support recognition and creation of the following upper dynamic interface types or encapsulations:
The auto-configure command identifies the encapsulation type. For flexibility, the router provides the ability to configure an ATM 1483 subinterface with distinct profile assignments for each encapsulation type supported by the auto-configure command. For more information about using this command, see auto-configure Command.