interface GigabitEthernet0
 no ip address
 no ip route-cache
 duplex auto
 speed auto
!
interface GigabitEthernet0.100
 encapsulation dot1Q 100 native
 no ip route-cache
 bridge-group 1
 bridge-group 1 spanning-disabled
 no bridge-group 1 source-learning
!
interface GigabitEthernet0.200
 encapsulation dot1Q 200
 no ip route-cache
 bridge-group 2
 bridge-group 2 spanning-disabled
 no bridge-group 2 source-learning
!