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PPPoE over L2TP not working



I'm trying to setup a C1841 as LAC and forward pppoe session via L2TP to a C7204 VXR router. It doesn't seem to work. There seems to be no request to setup the L2TP connection. I know that, because i setup an IPSEC tunnel from LAC to LNS and this IPSEC tunnel doesn't come up. The IPSEC tunnel works, because i can ping the destination for my L2TP tunnel (and the IPSEC tunnel comes up). But if i clear the IPSEC tunnel and look, if it comes up, when my PPPoE client tries to initiate a connection, the IPSEC tunnel doesn't come up. My setup is based on the configuration listed on this website:

The IOS versions used for this setup are c1841-advipservicesk9-mz.124-24.T8.bin on the LAC and c7200-adventerprisek9-mz.151-4.M3a.bin on the LNS. The part of the configuration for PPPoE and L2TP on the LAC is:




vpdn enable
vpdn multihop
vpdn logging
vpdn logging user
no vpdn ip udp ignore checksum
vpdn search-order domain
vpdn domain-delimiter % suffix


vpdn-group to-netde
  protocol l2tp
 initiate-to ip  priority 1
 local name ilse-client
 l2tp tunnel password mytunnel

bba-group pppoe GROUP1
 virtual-template 1

interface FastEthernet0/0
 ip address
 duplex auto
 speed auto
 crypto map ilse
interface FastEthernet0/1
 no ip address
 duplex auto
 speed auto
 pppoe enable group GROUP1

interface Virtual-Template1
 ip unnumbered FastEthernet0/0
 no snmp trap link-status
 ppp authentication chap callin


... and on the LNS:




vpdn-group ilse-test
  protocol l2tp
  virtual-template 10
 terminate-from hostname ilse-client
 local name
 l2tp tunnel password mytunnel

interface Loopback10
 ip address


interface Virtual-Template10
 description direct internet access via Telekom BSA
 mtu 1452
 ip unnumbered Loopback0
 no ip redirects
 ip load-sharing per-packet
 no ip route-cache
 ip tcp adjust-mss 1408
 no logging event link-status
 ipv6 unnumbered Loopback0
 ipv6 enable
 ipv6 rip TELEKOM-BSA enable
 ipv6 rip TELEKOM-BSA default-information only
 no snmp trap link-status
 keepalive 1 1
 ppp authentication chap callin PPP
 ppp accounting PPP
 ppp chap refuse
 ppp pap refuse
 ppp link reorders


In my opinion, the issue is not based on the configuration of the LNC, because i don't see the IPSEC tunnel between and come up (but a ping from LAC to brigs the IPSEC tunnel up), so it seems, that my LAC does not try to initiate a L2TP connection to my LNS. How ca i fix this issue? Any ideas?


Re: PPPoE over L2TP not working

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