service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname Core_Router ! enable password san-fran ! ip subnet-zero no ip domain-lookup ip multicast-routing ip dvmrp route-limit 20000 ip cef ! ! ! interface Vlan1 ip address 10.1.7.17 255.255.255.0 no ip directed-broadcast ip pim sparse-dense-mode no ip route-cache cef no shut ! interface Vlan51 ip address 10.51.7.7 255.255.255.0 no ip directed-broadcast ip pim sparse-dense-mode no ip route-cache cef ip ospf priority 100 no shut ! interface Vlan53 ip address 10.53.7.7 255.255.255.0 no ip directed-broadcast ip pim sparse-dense-mode no ip route-cache cef no shut ! router eigrp 100 network 10.0.0.0 ! router ospf 1 network 10.1.0.0 0.0.255.255 area 0 network 10.51.0.0 0.0.255.255 area 0 network 10.53.0.0 0.0.255.255 area 53 ! router igrp 100 network 10.0.0.0 ! ip classless ! ! ! line con 0 logging synchronous transport input none line vty 0 4 password cisco logging synchronous login ! end