I am trying to create a bridge between two 3845 routers so that the same subnet can appear on both routers which are connected by a third party's network using l2tpv3.
Router 1 has a physical interface (GigabitEthernet0/0.1999) which is connected to the third party's network Router 2 has a physical interface (GigabitEthernet0/0.2000) which is connected to the third party's network
A route exists in the third parties network to allow routing between router 1's and router 2's loopback interfaces.
A bridge group is configured on each router (BVI12). Both bridge-groups are in the same subnet.
A tunnel from an interface in each bridge group is xconnected to the loopback interface of the other router.
The tunnel is established and stays up.
I cannot ping between the ip addresses of the bridge groups.
Config fragments of each router:
Router 1:
l2tp-class class.to.router2
authentication
digest secret 0 CiSc0 hash SHA1
!
pseudowire-class pw.to.router2
encapsulation l2tpv3
protocol l2tpv3 class.to.router1
ip local interface Loopback0
ip pmtu
!
interface Loopback0
ip address 192.168.153.2 255.255.255.255 !
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
media-type sfp
!
interface GigabitEthernet0/0.1999
encapsulation dot1Q 1999
ip address 10.153.0.3 255.255.255.0
!
interface GigabitEthernet0/0.2501
encapsulation dot1Q 2501
no ip redirects
no cdp enable
xconnect 192.168.153.4 2000 pw-class pw.to.router2 bridge-group 12 !
interface GigabitEthernet0/1/0
no ip address
negotiation auto
!
interface GigabitEthernet0/1/0.2501
encapsulation dot1Q 2501
no ip redirects
no cdp enable
bridge-group 12
!
interface BVI12
ip address 192.168.192.2 255.255.255.0
no ip redirects
!
ip route 192.168.153.4 255.255.255.255 10.153.0.2 !
bridge 12 protocol ieee
bridge 12 route ip
!
Router 2:
l2tp-class class.to.router1
authentication
digest secret 0 CiSc0 hash SHA1
!
pseudowire-class pw.to.router1
encapsulation l2tpv3
protocol l2tpv3 class.to.router1
ip local interface Loopback0
ip pmtu
!
interface Loopback0
ip address 192.168.153.4 255.255.255.255 !
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
media-type sfp
!
interface GigabitEthernet0/0.1999
encapsulation dot1Q 1999
ip address 10.153.1.3 255.255.255.0
!
interface GigabitEthernet0/0.2501
encapsulation dot1Q 2501
no ip redirects
no cdp enable
xconnect 192.168.153.2 2000 pw-class pw.to.router1 bridge-group 12 !
interface GigabitEthernet0/1/0
no ip address
negotiation auto
!
interface GigabitEthernet0/1/0.2501
encapsulation dot1Q 2501
no ip redirects
no cdp enable
bridge-group 12
!
interface BVI12
ip address 192.168.192.4 255.255.255.0
no ip redirects
!
ip route 192.168.153.2 255.255.255.255 10.153.1.2 !
bridge 12 protocol ieee
bridge 12 route ip
!
