!
interface r2-eth0
 ip ospf network point-to-point
 ip ospf hello-interval 2
 ip ospf dead-interval 10
!
interface r2-eth1
 ip ospf network point-to-point
 ip ospf hello-interval 2
 ip ospf dead-interval 10
!
router ospf
 ospf router-id 10.0.23.2
 network 10.0.12.0/24 area 0
 network 10.0.23.0/24 area 1
 area 1 nssa 
!