client-initiated L2TP tunnel over L2TP tunnel

Discussion in 'Cisco' started by davidls, Mar 31, 2009.

  1. davidls


    Mar 31, 2009
    Likes Received:
    Hi, everybody.

    I'm working for an ISP and we are trying to set up a client-initiated L2TP tunnel over another client-initiated L2TP tunnel (with one Virtual-PPP interface over another) but it doesn´t work, topmost L2TP tunnel doesn´t come up.

    We are trying to do this to simulate a client-initiated L2TP tunnel (with a Virtual-PPP) over a L2TP ADSL (with a Dialer), since we don´t have at the moment a L2TP ADSL to test with.

    Has anyone of you been able to make such a thing? Do you know if it is possible? I have been doing some researching in google, but I haven´t found anything like this.

    I post the config I'm using for the CPE (i.e. the LAC) and "show int desc".

    Thanks in advance


    ! CPE

    l2tp-class l2tpclass1
    hostname host_iblan
    receive-window 256
    l2tp-class l2tpclass2
    hostname host_iblan

    vpdn enable

    pseudowire-class pwclass1
    encapsulation l2tpv2
    protocol l2tpv2 l2tpclass1
    ip local interface FastEthernet0.550
    pseudowire-class pwclass2
    encapsulation l2tpv2
    protocol l2tpv2 l2tpclass2
    ip local interface Virtual-PPP1

    interface FastEthernet0.550
    encapsulation dot1Q 550
    ip address

    interface Virtual-PPP1
    ip vrf forwarding Datos
    ip address
    ip tcp adjust-mss 1420
    no cdp enable
    ppp chap hostname [email protected]
    ppp chap password 7 0014011301590A140E32
    pseudowire 1 pw-class pwclass1
    interface Virtual-PPP2
    ip vrf forwarding Datos
    ip address negotiated
    ip tcp adjust-mss 1300
    no cdp enable
    ppp chap hostname [email protected]
    ppp chap password 7 131513131F0317
    pseudowire 2 pw-class pwclass2

    pruebasGRE-L2TP-e4#sh int desc
    Interface Status Protocol Description
    Fa0 up up
    Fa0.550 up up
    BR0 admin down down
    BR0:1 admin down down
    BR0:2 admin down down
    Fa1 up down
    Fa2 up down
    Fa3 up down
    Fa4 up down
    Fa5 down down
    Fa6 up down
    Fa7 up down
    Fa8 up down
    AT0 admin down down
    Vl1 up down
    Vp1 up up
    Vl2 up down
    Vp2 up down
    davidls, Mar 31, 2009
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