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Forum Replies

  1. For non-static clients' IPs we can use local pools or dhcp:

    ! ------ R2 Client
    !
    interface Dialer0
     ip address dhcp
    ! or
    !ip address negotiated
    
    ! ------ R1 Server
    !
    ip dhcp excluded-address 144.10.1.1 144.10.1.4
    ip dhcp pool PPPoE 
       network 144.10.1.0 255.255.255.0
    ! or
    ! ip local pool PPPoE 144.10.1.5 144.10.1.9
    !
    interface Virtual-Template1
     peer ip address forced 
     peer default ip address dhcp-pool PPPoE
    ! or
    !peer ip address forced
    !peer default ip address pool PPPoE

    The local pools differ from the DHCP in assigning /32 to the clients.
    The OSPF RFC says that OSPF ignores subnet mask on point-to-point links, however we won’t be able to have adjacency between /24 and /32, since the client finds itself in an isolated network.

  2. Hi Sarah,

    It's probably because the IOS version on your 2811 doesn't support this command. You might want to check that and perhaps upgrade the image.

    Rene

  3. Hello Ryan

    When creating Broadband Access Group profiles, you can create either a global group or multiple non-global groups. A global group is that which is created using the bba-group ppoe global command just like Rene did in the example. The non-global groups can be created using the command bba-group ppoe group-name where the group name can be whatever you name it. Whether one profile or the other will be used depends on the PPPoE sessions that are established and what Virtual Circuit (VC) classes are used. Those can be further defined in the configuration. You can find more information about these profiles and how to configure them here.

    As for the virtual templates, these can be considered the configuration that is inherited by the interface to which the client will connect. This is associated with the bba profile which will be used to connect. Finally, this is all tied together by applying the bba group to the physical interface to which the client will connect.

    I hope this has been helpful!

    Laz

  4. Hello Simon

    PPPoE is used for networks with shared resources such as DSL and Cable.

    If you have a fibre connection to your premises, it usually does not use PPPoE. This is a dedicated link (usually metro Ethernet) to the Telco's network.

    I hope this has been helpful!

    Laz

  5. Hi,
    I think there is not enough coverage in CCNP ROUTE topics on on PPPoE vpdn and more for the exam topic. Can this be improved as per the exam guide lines

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