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Configuring a PPPoE Dynamic Profile

 

You can configure a basic dynamic profile for PPPoE subscribers that defines the attributes of the dynamic PPPoE logical subscriber interface (pp0).

To configure a basic PPPoE dynamic profile:

  1. Name the dynamic profile.
  2. Specify that you want to configure the pp0 logical interface in the dynamic profile.
  3. Specify $junos-interface-unit as the predefined variable to represent the logical unit number for the pp0 interface.

    The $junos-interface-unit variable is replaced with the actual unit number supplied by the network when the subscriber logs in.

  4. Configure PPPoE-specific options for the pp0 interface.
    1. Specify the $junos-underlying-interface predefined variable to represent the name of the underlying Ethernet interface on which the router creates the dynamic PPPoE logical interface.

      The $junos-underlying-interface variable is replaced with the actual name of the underlying interface supplied by the network when the subscriber logs in.

    2. Configure the router to act as a PPPoE server, also known as a remote access concentrator.
  5. Configure the PPP authentication protocol for the pp0 interface.

    For dynamic interfaces, the router supports only unidirectional authentication; that is, the router always functions as the authenticator. When you configure PPP authentication in a dynamic profile, the chap and pap statements do not support any additional configuration options.

    • To configure CHAP authentication:

    • To configure PAP authentication:

  6. Modify the keepalive interval, or configure the router to disable sending keepalive messages.
    • To modify the keepalive interval:

    • To disable sending keepalive messages:

  7. Configure the protocol family for the pp0 interface.
    1. Specify that you want to configure the inet (IPv4) or inet6 (IPv6) protocol family.
    2. Specify the IPv4 or IPv6 address of the dynamic PPPoE logical interface.
    3. Configure the unnumbered address for the protocol family.
    4. Specify the input and output service sets that you want to apply to the dynamic PPPoE logical interface.
    5. Specify the input and output filters that you want to apply to the dynamic PPPoE logical interface.

      To control the order in which filters are processed, you can optionally specify a precedence value for the input filter, output filter, or both.