Router A and B are both running as PPPoE servers on different broadcast domains of your network. It is
possible to set Router A to use "/ppp secret" accounts from Router B to authenticate PPPoE customers.
Which option in the configuration of a wireless card must be disabled to cause the router to permit ONLY
known clients listed in the access list to connect?
PPPoE server only works within one Ethernet broadcast domain that it is connected to. If there is a router
between server and end-user host, it will not be able to create PPPoE tunnel to that PPPoE server.