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    Configuring PADS Packet Content

    By default, an E Series router acting as an AC sends both the AC-Name and AC-Cookie tags as part of the PADS (PPPoE Active Discovery Session) packet when it confirms a session with a PPPoE client. These tags are defined in RFC 2516 as follows:

    • AC-Name—String that uniquely identifies the particular AC
    • AC-Cookie—Tag used by the AC to help protect against denial of service (DoS) attacks

    If necessary for compatibility with your network equipment, you can prevent the router from sending the AC-Name and AC-Cookie tags in the PADS packet.

    Note: The pppoe pads disable-ac-info command affects PADS packets sent only on PPPoE interfaces configured on the router after the command is issued. It has no effect on PADS packets sent on previously created PPPoE interfaces.

    To configure the packet content of the PADS packet:

    • From Global Configuration mode, prevent the router from sharing the AC-Name and AC-Cookies information in the PADs packet:
      host1(config)#pppoe pads disable-ac-info

    Published: 2014-08-14