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Configuring an Underlying Interface for Dynamic PPPoE Subscriber Interfaces

After you configure a dynamic profile to define the attributes of a dynamic PPPoE subscriber interface, you must attach the dynamic profile to a statically created underlying Ethernet interface.

Before you begin:

  1. Configure the static underlying Ethernet interface on which you want the router to dynamically create the PPPoE logical interface.

    For information about configuring static Ethernet interfaces, see Configuring Ethernet Physical Interface Properties.

  2. Configure a PPPoE dynamic profile.

To configure an underlying Ethernet interface for a dynamic PPPoE subscriber interface:

  1. Specify the name and logical unit number of the static underlying Ethernet interface to which you want to attach the PPPoE dynamic profile.
  2. Configure PPPoE encapsulation on the underlying interface.
  3. Specify that you want to configure PPPoE-specific options on the underlying interface.
  4. Attach a previously configured PPPoE dynamic profile to the underlying interface.

    You cannot attach a PPPoE dynamic profile to an underlying Ethernet interface that is already associated with static PPPoE logical interfaces. Conversely, you cannot associate static PPPoE logical interfaces with an underlying Ethernet interface that already has a PPPoE dynamic profile attached.

  5. (Optional) Enable duplicate protection to prevent another dynamic PPPoE logical interface from being activated on the underlying interface when a PPPoE logical interface for a client with the same MAC address is already active on that interface.
  6. (Optional) Specify the alternative name for the access concentrator, also known as the PPPoE server, in the AC-NAME tag in a PPPoE control packet

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