hostname R2
!
ip cef
!
interface GigabitEthernet0/1
 ip address 192.168.12.2 255.255.255.0
!
interface GigabitEthernet0/2
 ip address 192.168.23.2 255.255.255.0
!
router eigrp 1
 metric weights 0 0 0 1 0 0
 network 192.168.12.0
 network 192.168.23.0
!
end