configure terminal
!
hostname Router_4
!
interface FastEthernet0/0
 ip address 189.1.245.4 255.255.255.0
 no shutdown
!
interface FastEthernet0/1
 ip address 175.1.104.4 255.255.255.0
 no shutdown
!
interface loopback0
 ip address 140.1.4.4 255.255.255.0
!
end
!
write memory