configure terminal
!
hostname Router_2
!
interface FastEthernet0/0
 ip address 189.1.245.2 255.255.255.0
 no shutdown
!
interface FastEthernet0/1
 ip address 205.1.112.2 255.255.255.0
 no shutdown
!
interface loopback0
 ip address 140.1.2.2 255.255.255.0
!
end
!
write memory