PPP-over-Ethernet-over-ATM (PPPoE-over-ATM) configurations support both statically created and dynamically created PPPoE (pp0) logical subscriber interfaces over static ATM underlying interfaces. Most PPPoE and subscriber services features supported on terminated connections and tunneled (L2TP access concentrator, or LAC) connections are also supported for access to an MX Series router over an ATM network. You can dynamically apply subscriber services such as class of service (CoS) and firewall filters to the pp0 logical subscriber interface by configuring the services in the dynamic profile that creates the static or dynamic pp0 logical interface.