frr defaults traditional
hostname b
log file /tmp/ospfd.log
!
interface lo
 ip address 10.205.0.2/32
!
! hacia a
interface eth1
 ip address 10.205.12.2/30
 ip ospf network point-to-point
 ip ospf cost 3
!
! hacia c
interface eth2
 ip address 10.205.23.1/30
 ip ospf network point-to-point
 ip ospf cost 4
!
! hacia d
interface eth3
 ip address 10.205.24.1/30
 ip ospf network point-to-point
 ip ospf cost 2
!
router ospf
 ospf router-id 10.205.0.2
 log-adjacency-changes detail
 network 10.205.0.0/16 area 0