Cisco CCNP and CCIE Study Notes

Consider a router that has two hosts connected to a bridged segment on a couple of ethernet interfaces in the subnet 10.10.10.0/24. The same router has a routed segment on an ethernet interface in the subnet 20.20.20.0/24 to which a host is connected. The corresponding configuration on the router is

interface Ethernet0/0
 no ip address
 bridge-group 1
!
interface Ethernet1/0
 no ip address
 bridge-group 1
!
interface Ethernet2/0
 ip address 20.20.20.1 255.255.255.0
 no keepalive
!
bridge 1 protocol ieee

The hosts on the bridged segment have the IP addresses 10.10.10.1 and 10.10.10.2 while the host on the routed segment has the address 20.20.20.2.

It is now required that all three hosts be able to ping each other. What additional configuration is needed on the router to achieve that level of connectivity between the hosts? Note that the constraint to the solution is that the bridged segment should continue to bridge while the routed segement should continue to route.