R1: interface Loopback0 ip address 1.1.1.1 255.255.255.255 ip ospf authentication-key cisco ip ospf 1 area 0 interface Ethernet0/0 ip address 192.168.18.1 255.255.255.0 ip ospf priority 5 ip ospf 1 area 3 interface Ethernet0/1 ip address 192.168.12.1 255.255.255.0 ip ospf authentication-key cisco ip ospf priority 5 ip ospf 1 area 0 interface Ethernet0/2 ip address 192.168.13.1 255.255.255.0 ip ospf authentication-key cisco ip ospf priority 5 ip ospf 1 area 0 router ospf 1 area 0 authentication area 3 stub no-summary area 3 range 172.16.0.0 255.255.252.0
R2: interface Loopback0 ip address 2.2.2.2 255.255.255.255 ip ospf authentication-key cisco ip ospf 1 area 0 interface Ethernet0/0 ip address 192.168.12.2 255.255.255.0 ip ospf authentication-key cisco ip ospf 1 area 0 router ospf 1 area 0 authentication
R3: interface Loopback0 ip address 3.3.3.3 255.255.255.255 ip ospf authentication-key cisco ip ospf 1 area 0 interface Ethernet0/0 ip address 192.168.13.3 255.255.255.0 ip ospf authentication-key cisco ip ospf 1 area 0 interface Ethernet0/1 ip address 192.168.34.3 255.255.255.0 ip ospf message-digest-key 1 md5 ospf ip ospf network point-to-point ip ospf 1 area 1 router ospf 1 area 0 authentication area 1 authentication message-digest area 1 virtual-link 4.4.4.4 authentication authentication-key huawei
R4: interface Loopback0 ip address 4.4.4.4 255.255.255.255 ip ospf 1 area 1 interface Ethernet0/0 ip address 192.168.34.4 255.255.255.0 ip ospf message-digest-key 1 md5 ospf ip ospf network point-to-point ip ospf 1 area 1 interface Ethernet0/1 ip address 192.168.45.4 255.255.255.0 ip ospf network point-to-point ip ospf 1 area 2 router ospf 1 area 1 authentication message-digest area 1 virtual-link 3.3.3.3 authentication authentication-key huawei area 2 nssa no-summary
R5: interface Loopback0 ip address 5.5.5.5 255.255.255.255 ip ospf 1 area 2 interface Ethernet0/0 ip address 192.168.45.5 255.255.255.0 ip ospf network point-to-point ip ospf 1 area 2 interface Ethernet0/1 ip address 192.168.56.5 255.255.255.0 router ospf 1 area 2 nssa summary-address 6.6.0.0 255.255.0.0 redistribute rip metric 5 subnets router rip version 2 redistribute ospf 2 metric 5 network 192.168.56.0 no auto-summary
R6: interface Loopback0 ip address 6.6.6.6 255.255.255.255 interface Loopback1 ip address 6.6.1.1 255.255.255.0 interface Loopback2 ip address 6.6.2.1 255.255.255.0 interface Loopback3 ip address 6.6.3.1 255.255.255.0 interface Ethernet0/0 ip address 192.168.56.6 255.255.255.0 interface Ethernet0/3 no ip address shutdown router rip version 2 network 6.0.0.0 network 192.168.56.0 no auto-summary ip route 0.0.0.0 0.0.0.0 192.168.56.5
R7: interface Loopback0 ip address 7.7.7.7 255.255.255.255 ip ospf 1 area 3 interface Loopback1 ip address 172.16.1.1 255.255.255.0 ip ospf 1 area 3 interface Loopback2 ip address 172.16.2.1 255.255.255.0 ip ospf 1 area 3 interface Loopback3 ip address 172.16.3.1 255.255.255.0 ip ospf 1 area 3 interface Ethernet0/0 ip address 192.168.78.7 255.255.255.0 ip ospf network point-to-point ip ospf 1 area 3 router ospf 1 area 3 stub no-summary
R8: interface Loopback0 ip address 8.8.8.8 255.255.255.255 ip ospf 1 area 3 interface Ethernet0/0 ip address 192.168.78.8 255.255.255.0 ip ospf network point-to-point ip ospf 1 area 3 interface Ethernet0/1 ip address 192.168.18.8 255.255.255.0 ip ospf 1 area 3 router ospf 1 area 3 stub