Integrated Routing & Bridging

IRB permits to bridge between to router interfaces, create a virtual interface (BVI) and permit to route via this BVI between the bridged interface and the other router interface.

In this lab you want to bridge between 2 vlans :

interface Ethernet0/0
no ip address
half-duplex
!
interface Ethernet0/0.16
encapsulation dot1Q 16
bridge-group 1
!
interface Ethernet0/0.36
encapsulation dot1Q 36
bridge-group 1

You now need to enable a spanning tree protocol on the group

bridge 1 protocol ieee

It's now possible to ping machine between vlan 36 and vlan 16 (same broadcast domain)

Now to route between vlan 16/36 to other router interface, you need to create a virtual interface with an IP :

interface BVI1
ip address 136.1.136.6 255.255.255.0
bridge 1 route ip

From vlan 16/36 you could now ping BVi1 and behind