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    Guidelines for Configuring Encapsulation Type Lockout for IWF PPPoE Sessions

    Keep the following points in mind while configuring dynamic encapsulation type lockout for IWF PPPoE sessions:

    • If the DSLAM network does not add the DSL Forum VSAs (Agent-Circuit-Id and Agent-Remote-Id) that are required to accurately and uniquely identify the subscriber access loop, dynamic encapsulation type lockout for PPPoE clients is performed using MAC address as the only criterion to identify subscribers.

      In such conditions, the mode of working of encapsulation type lockout for PPPoE clients is the same as the behavior that existed when lockout of PPPoE clients was performed using the MAC address of the client as the only matching parameter.

    • If the Agent-Circuit-Id DSL Forum VSA (26-1) is not contained in the PADR packet sent from the PPPoE client or is not unique for each IWF PPPoE session that originates from the client, the Agent-Remote-Id DSL VSA (26-2) is used along with the MAC address as the filter criteria to uniquely identify the subscriber session that needs to be locked out.
    • When you enter the pppoe auto-configure lockout-time command in Interface Configuration mode or Subinterface Configuration mode to configure dynamic encapsulation type lockout, even if PPPoE sessions associated with a particular MAC address are locked out, other PPPoE sessions that originated with the same MAC address are not terminated (continue to remain logged in) if they are IWF sessions from different access loops (PPPoE clients) and this information is available to the B-RAS application.

    Published: 2014-08-14