I am trying to configure an L2TP/IPSec remote access VPN on a Cisco 2901. I'm using what is pretty much a copy/paste of a config that is working just fine on an older router (a 2811). However, it seems I'm missing something - I can see the IPSec negotiating properly, but the L2TP tunnel simply does not trigger after that (there is no L2TP-related output).
See below for the final lines of the debug (I didn't post the entire debug to save space, but I can do that if you believe it is necessary).Notice that the phase 2 SAs come up, and then... there's only silence
The other end of the connection is a laptop with Win7 x64, on which I get error 809 ("The connection could not be established because the remote server is not responding").
The router (2901) is running IOS 15.4(1)T. As far as I know, there is no packet filtering between the client and the server. And with very little documentation on Cisco's website regarding L2TP on IOS, I'm at a loss.
Can anyone point me in the right direction?
L2TP packet events debugging is on
L2TP packet errors debugging is on
L2TP errors debugging is on
L2TP events debugging is on
L2TP L2TUN socket API debugging is on
L2TP application debugs debugging is on
L2TP/PPTP control packet debugging is on
VPDN call event debugging is on
VPDN events debugging is on
Crypto ISAKMP debugging is on
Crypto IPSEC debugging is on
Dec 16 16:31:59.628 EET: IPSEC(validate_proposal_request): proposal part #1,
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...