We're Sorry, Full Content Access is for Members Only...

If you like to keep on reading, Become a Member Now! Here is Why:

  • Learn any CCNA, CCNP and CCIE R&S Topic. Explained As Simple As Possible.
  • Try for Just $1. The Best Dollar You've Ever Spent on Your Cisco Career!
  • Full Access to our 637 Lessons. More Lessons Added Every Week!
  • Content created by Rene Molenaar (CCIE #41726)

 

367 New Members signed up the last 30 days!

satisfaction-guaranteed

100% Satisfaction Guaranteed!
You may cancel your monthly membership at any time.
No Questions Asked!

Tags: ,


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

    ... Continue reading in our forum

  2. Hi Rene,
    when I write “bba-group pppoe global” in global config mode, on generic or 2811 router, it shows:
    invalid input detected…! what’s the problem from?

  3. 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

  4. Hello Hussein.

    What you are describing is a point that is often misunderstood and it is good that you bring it up. If you have an MTU of 1500 bytes on the dialler and virtual template and you are running PPPoE, then any and all packets that are 1492 bytes and smaller will be transmitted successfully and any of size larger than 1500 will be fragmented and will pass (if the DF bit is set to 0).

    The problem arises when there are packets of sizes 1493 to 1500. In this case, the virtual template and dialler will allow it through without fragmenting it but the PPPo

    ... Continue reading in our forum

  5. Hi Kevin,

    I’d start with a couple of debug commands:

    • debug ppp
    • debug dialer
    • debug pppoe

    That should show something when it’s flapping. About VPDN, I just checked but I don’t think you can do this for PPPoE on the client. Here’s what I have on IOS 15:

    Client(config)#vpdn enable 
    
    Client(config)#vpdn-group MY_GROUP
    Client(config-vpdn)#request-dialout
    Client(config-vpdn-req-out)#protocol ?
      l2tp  Use L2TP

    I looked around to see if there is anything for IOS 12.4 but I don’t think so. On the ASA, it seems to be possible:

    https://www.cisco.com/c/en/us/td/docs/secu

    ... Continue reading in our forum

40 more replies! Ask a question or join the discussion by visiting our Community Forum