!
hostname ospfd
password zebra
enable password secret
!
interface eth0
 ip ospf message-digest-key 1 md5 hallo123
interface eth3
 ip ospf message-digest-key 1 md5 hallo123
!
!
router ospf
 redistribute connected
 network 172.16.1.0/24 area 0.0.0.0
 network 172.17.0.0/16 area 0.0.0.0
 network 192.168.1.0/24 area 0.0.0.0
 network 192.168.2.0/24 area 0.0.0.0
 network 192.168.40.0/24 area 0.0.0.0
 area 0.0.0.0 authentication message-digest