!
hostname Router_B
!
enable password cisco
!
ip subnet-zero
!
interface Loopback0
ip address 200.200.200.200 255.255.255.255
!
interface Ethernet0
ip address 192.168.1.2 255.255.255.0
!
router ospf 1
network 192.168.1.0 0.0.0.255 area 0
!
ip classless
!
line vty 0 4
password cisco
login
!
end