Cisco Systems L2TP tunnel problem

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Subject Author Date
L2TP tunnel problem gzerphey 07-09-07
Posted by gzerphey on July 9, 2007, 12:40 pm
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I am having trouble with an L2TP tunnel. I have set up the manual
handshake configuration and the tunnel is up and active, but no data
seems to be traversing the network. If you guys have any ideas they
would be appreciated. Attached is the configurations for the routers
in question.

I am trying to switch 172.20.48.x over the link. Oh yeah, please
ignore the hostname on the routers, this was originally going to be
GRE tunnels.

Thank you,

George

JFK_GRE Router
--------------------------
Current configuration : 1141 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname JFK_GRE
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$tZ3g$vojTFXEobkFOMeJhb/eNy.
!
no aaa new-model
!
resource policy
!
ip subnet-zero
ip cef
!
!
l2tp-class class1
!
l2tp-class l2tp-defaults
retransmit initial retries 30
cookie size 8
!
!
pseudowire-class ether-tunnel
encapsulation l2tpv3
protocol none
ip local interface FastEthernet4
!
!
!
!
!
!
!
!
interface FastEthernet0
no cdp enable
xconnect 172.20.16.250 123 encapsulation l2tpv3 manual pw-class ether-
tunnel
l2tp id 222 111
l2tp cookie local 4 12345
l2tp hello l2tp-defaults
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
ip address 172.20.32.250 255.255.240.0
duplex auto
speed auto
!
interface Vlan1
no ip address
!
ip classless
ip route 0.0.0.0 0.0.0.0 172.20.32.1
!
no ip http server
no ip http secure-server
!
!
control-plane
!
!
line con 0
no modem enable
line aux 0
line vty 0 4
password cisco
login
!
scheduler max-task-time 5000
end



Elkneck_GRE
---------------------
Current configuration : 1154 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Elkneck_GRE
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$9eXt$ne3V6bdt/MaUDXnkAYRkJ0
!
no aaa new-model
!
resource policy
!
ip subnet-zero
ip cef
!
!
l2tp-class l2tp-defaults
retransmit initial retries 30
cookie size 8
!
!
pseudowire-class ether-tunnel
encapsulation l2tpv3
protocol none
ip local interface FastEthernet4
!
!
!
!
!
!
!
!
interface FastEthernet0
no cdp enable
xconnect 172.20.32.250 123 encapsulation l2tpv3 manual pw-class ether-
tunnel
l2tp id 111 222
l2tp cookie local 4 12345
l2tp cookie remote 4 54321
l2tp hello l2tp-defaults
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
ip address 172.20.16.250 255.255.240.0
duplex auto
speed auto
!
interface Vlan1
no ip address
!
ip classless
ip route 0.0.0.0 0.0.0.0 172.20.16.1
!
no ip http server
no ip http secure-server
!
!
control-plane
!
!
line con 0
no modem enable
line aux 0
line vty 0 4
password cisco
login
!
scheduler max-task-time 5000
end


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