cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
497
Views
0
Helpful
1
Replies
Beginner

PPPoE over L2TP not working

Hello,

 

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:

https://networkbackyard.wordpress.com/2017/04/21/cisco-pppoe-over-l2tp-sample-configuration-lab/

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:

 

LAC:

 

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
 request-dialin
  protocol l2tp
  domain ilse@vdsl.net.de
 initiate-to ip 10.0.0.1  priority 1
 source-ip 192.168.22.23
 local name ilse-client
 l2tp tunnel password mytunnel
!

bba-group pppoe GROUP1
 virtual-template 1
!

interface FastEthernet0/0
 ip address 192.168.22.23 255.255.255.0
 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:

 

LNS:

 

vpdn-group ilse-test
 accept-dialin
  protocol l2tp
  virtual-template 10
 terminate-from hostname ilse-client
 source-ip 10.0.0.1
 local name bras2.cs.net.de
 l2tp tunnel password mytunnel
!

interface Loopback10
 ip address 10.0.0.1 255.255.255.255

!

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 192.168.22.23 and 10.0.0.1 come up (but a ping from LAC to 10.0.0.1 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?

1 REPLY 1
Participant

Re: PPPoE over L2TP not working

Everyone's tags (4)
CreatePlease to create content
Content for Community-Ad
August's Community Spotlight Awards