int Loopback0
 ip add 1.1.1.1 255.255.255.255

pseudowire-class L2-Tunnel
 encapsulation l2tpv3
 ip local interface Loopback0

interface GigabitEthernet0/0/0.10
 encapsulation dot1Q 10
 xconnect 1.1.1.2 10 encapsulation l2tpv3 pw-class Ethernet-L2-Tunnel

interface GigabitEthernet0/0/0.11
 encapsulation dot1Q 11
 xconnect 1.1.1.2 11 encapsulation l2tpv3 pw-class Ethernet-L2-Tunnel

interface GigabitEthernet0/0/0.12
 encapsulation dot1Q 12
 xconnect 1.1.1.2 12 encapsulation l2tpv3 pw-class Ethernet-L2-Tunnel


!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Router 2 config !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

int Loopback0
 ip add 1.1.1.2 255.255.255.255

pseudowire-class L2-Tunnel
 encapsulation l2tpv3
 ip local interface Loopback0

interface GigabitEthernet0/0/0.10
 encapsulation dot1Q 10
 xconnect 1.1.1.1 10 encapsulation l2tpv3 pw-class Ethernet-L2-Tunnel

interface GigabitEthernet0/0/0.11
 encapsulation dot1Q 11
 xconnect 1.1.1.1 11 encapsulation l2tpv3 pw-class Ethernet-L2-Tunnel

interface GigabitEthernet0/0/0.12
 encapsulation dot1Q 12
 xconnect 1.1.1.1 12 encapsulation l2tpv3 pw-class Ethernet-L2-Tunnel