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Cisco 1941 and L2TPv3

Posted on 2014-03-21
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Last Modified: 2014-11-11
I have 2 Cisco 1941 routers, and I want to create a VPN connection (L2TPv3) between them.
The reason I need a L2TPv3 between them, is that I need to forward some VLANs over the link. I want to hook up a trunk port on each side (LAN), and the router should forward the VLANs I want over the link.

Can you please help me with a sample configuration for this?
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Question by:stebyshe
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Joshua1909 earned 500 total points
ID: 40213418
Hi,

Here is a sample configuration from Cisco documentation. In the example, 198.51.100.100 and 203.0.113.102 are the WAN IP addresses.

I can run up a GNS3 lab if you need more detail.


Router r101 Configuration

interface Ethernet0/0
 ip address 172.16.1.100 255.255.255.0

Router r100 Configuration

pseudowire-class test
 encapsulation l2tpv3
 protocol none
 ip local interface fast 0/0
!
interface FastEthernet0/0
 description WAN
 ip address 198.51.100.100 255.255.255.0
!
interface FastEthernet0/1
 description LAN
 no ip address
 speed 100
 full-duplex
 xconnect 203.0.113.102 1 encapsulation l2tpv3 manual pw-class test
 l2tp id 1 2
!
ip route 0.0.0.0 0.0.0.0 198.51.100.1

Router r202 Configuration

pseudowire-class test
 encapsulation l2tpv3
 protocol none
 ip local interface fast 0/0
!
interface FastEthernet0/0
 description WAN
 ip address 203.0.113.102 255.255.255.255

interface FastEthernet0/1
 no ip address
 duplex auto
 speed auto
 xconnect 198.51.100.100 1 encapsulation l2tpv3 manual pw-class test
 l2tp id 2 1

Router r201 Configuration

interface Ethernet0/0
 ip address 172.16.1.201 255.255.255.0


http://www.cisco.com/c/en/us/support/docs/ip/layer-two-tunnel-protocol-l2tp/116266-configure-l2-00.html

Cheers,
Josh
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