I'm looking to build (cheaply) some l2tpv3 tunnels across a campus network. I have a pair of 881's and I was hoping to xconnect the VLAN 1 intfcs between the two of them. "xconnect" is not a CLI option on the interface configuration, although it is for the individual Fa0-3 interfaces. Just for grins, I xconnected the l2tpv3 tunnel between each Fa3 on each router, and the tunnel comes up successfully and I can see a session established. I am routing between the WAN interfaces (Fa4) on each. However, L2 traffic is not passing between the two Fa3 interfaces.
I can do it backwards, i.e. route between the Vlan1 interfaces and xconnect the Fa4 interfaces (i.e. WAN), and I can see broadcast traffic from the destination network appearing on the local interface. However, I'd really rather have the four interfaces in VLAN1 tunnelled rather than the WAN interface. I am guessing this has to do with ISL vs. 802.1q, since I'm trying to encapsulate VLAN1 as Ethernet and not as dot1q - but I'm a bit lost here and I'm not quite sure if I can make this work.
Fa3/VLAN1 - pseudowire(Fa4<>Fa4) - VLAN1/Fa3 doesn't work
Fa4 - pseudowire(VLAN1<>VLAN1) - Fa4 works
Anyone have any ideas?