! service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R4 ! enable secret routing ! no aaa new-model ip subnet-zero ! ! no ip domain lookup ! ip cef ! interface Loopback0 ip address 172.17.0.4 255.255.255.255 ! interface Serial1/3 description R3 S1/3 ip address 192.168.100.14 255.255.255.252 serial restart-delay 0 ! ip classless no ip http server no ip http secure-server ! ! line con 0 exec-timeout 0 0 stopbits 1 line aux 0 stopbits 1 line vty 0 4 password network login ! ! end