I have a 3825 router running 12.4-11.XJ4. I want do bridge a vlan through it, config below. but it is not passing the traffic. I have a router connected each side of the bridge router one on each port g0/0.25 and g0/1.25. I just want to create a L2 link between R1 and R2. I can however see the MAC address of the opposite router in the ARP tables and if I leave it pinging about 1 in 1000 pings gets through.
R1 <--vlan25--> Bridge Router<--vlan25--> R2
bridge irb
!
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
media-type rj45
no keepalive
!
interface GigabitEthernet0/0.25
encapsulation dot1Q 25
bridge-group 25
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
media-type rj45
no keepalive
!
interface GigabitEthernet0/1.25
encapsulation dot1Q 25
bridge-group 25
!
bridge 25 protocol ieee
I have a 2nd 3825 with came s/w abd same config (just different vlan IDs) and it works fine.
