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New Member

L2TPv3 Tunnel Not Connecting

I am trying to extend Vlan 8 from siteA to siteB, but the tunnel is not coming up. I have attached both sites running configs, so if anyone can shed light on this, I'd appreciate it.

concourse-2801#sh l2tun tunnel

%No active L2TP tunnels

concourse-2801#sh l2tun session

L2TP Session Information Total tunnels 0 sessions 1

LocID      RemID      TunID      Username, Intf/      State  Last Chg Uniq ID
                                 Vcid, Circuit
1          1          n/a        1, Fa0/1.8:8         est    18w0d    1
concourse-2801#


usaf-kc-nlan-rtr#sh l2tun session

L2TP Session Information Total tunnels 0 sessions 1

LocID      RemID      TunID      Username, Intf/      State  Last Chg Uniq ID

                                 Vcid, Circuit

1          1          n/a        1, Fa0/1.8:8         est    1w0d     4

6 REPLIES
Cisco Employee

Re: L2TPv3 Tunnel Not Connecting

Jason,

Do you have any particular need to set up the L2TP protocol session values manually, instead of letting the L2TP handle the session establishement in its competence? I believe that letting the L2TP handle the session and tunnel establishement would solve your issue, as this is a basic L2TP pseudowire.

Best regards,

Peter

New Member

Re: L2TPv3 Tunnel Not Connecting

peter,

thanks for the information. we have no particular need for manually setting them up.

jason

Cisco Employee

Re: L2TPv3 Tunnel Not Connecting

Hi Jason,

In such case, I suggest correcting your configuration as follows:

pseudowire-class l2tp-auto

encapsulation l2tpv3

protocol l2tpv3

ip local interface Loopback1

! For the first router:

interface FastEthernet0/1.8

xconnect 4.4.4.4 1 pw-class l2tp-auto

! For the second router:

interface FastEthernet0/1.8

xconnect 2.2.2.2 1 pw-class l2tp-auto

This should do the trick.

Best regards,

Peter

New Member

Re: L2TPv3 Tunnel Not Connecting

Peter,

That worked like a charm. Thanks!

Jason

New Member

Re: L2TPv3 Tunnel Not Connecting

peter,

thanks for the information. we have no particular need for manually setting them up.

jason

New Member

Re: L2TPv3 Tunnel Not Connecting

I have the following routers

Router 1

Interface                  IP-Address      OK? Method Status                Protocol

FastEthernet0/0            192.168.192.20  YES NVRAM  up                    up     

FastEthernet0/1            63.232.181.14   YES NVRAM  up                    up     

FastEthernet0/3/0          10.1.1.3        YES NVRAM  up                    up     

NVI0                       192.168.192.20  YES unset  up                    up     

Multilink88                65.102.24.102   YES NVRAM  administratively down down  

Router 2

Interface                  IP-Address      OK? Method Status                Protocol

GigabitEthernet0/0         10.4.52.10      YES NVRAM  up                    up     

GigabitEthernet0/1         172.31.150.2    YES NVRAM  administratively down down   

Serial0/0/0:0              unassigned      YES NVRAM  up                    up     

Serial0/0/1:0              unassigned      YES NVRAM  up                    up     

Serial0/1/0                unassigned      YES NVRAM  up                    up     

Multilink1                 65.102.24.134   YES NVRAM  up                    up    

I understand that I need to create a pseudowire-class l2tp-auto entry, but would I do it on my g0/0 interface since that is the vlan I want to extend from router 2? And would I create a simular entry on router 1 FastEthernet0/3/0 since that is the vlan I want it to reach?  I appreciate all help.

Thanks

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