hostname R3
!
!
!
!
!
!
!
!
ip cef
no ipv6 cef
!
!
!
!
!
!
!
!
!
!
no ip domain-lookup
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface GigabitEthernet0/0/0
 ip address 10.3.1.2 255.255.255.252
 duplex auto
 speed auto
!
interface GigabitEthernet0/0/1
 ip address 10.2.1.1 255.255.255.252
 duplex auto
 speed auto
!
interface GigabitEthernet0/0/2
 ip address 10.30.30.1 255.255.255.0
 duplex auto
 speed auto
!
interface Vlan1
 no ip address
 shutdown
!
router ospf 1
 log-adjacency-changes
 network 10.0.0.0 0.255.255.255 area 10
!
ip classless
ip route 0.0.0.0 0.0.0.0 1.1.1.1 
ip route 0.0.0.0 0.0.0.0 10.3.1.1 
!
ip flow-export version 9
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
!
!
end