Task 1: OSPFv2 on R1 and R3
R1:
R1(config)# router ospf 1
R1(config-router)# router-id 1.1.1.1
R1(config-router)# passive-interface Ethernet0/0
R1(config-router)# network 192.168.1.0 0.0.0.255 area 5
R1(config-router)# network 10.1.0.0 0.0.0.255 area 5
R1(config-router)# network 1.1.1.1 0.0.0.0 area 5 !-Loopback0
R1(config-router)# exit
R1(config)# interface loopback0
R1(config-if)# ip address 1.1.1.1 255.255.255.255
R1(config-if)# exit
R1(config)# write memory
Defines OSPF process-1 with router-ID set to Loopback0, advertises each directly-connected IPv4 network into area-5, and suppresses hellos on the LAN-facing Ethernet0/0.
R3:
R3(config)# router ospf 1
R3(config-router)# router-id 3.3.3.3
R3(config-router)# passive-interface Ethernet0/0
R3(config-router)# network 192.168.3.0 0.0.0.255 area 10
R3(config-router)# network 10.2.0.0 0.0.0.255 area 10
R3(config-router)# network 3.3.3.3 0.0.0.0 area 10 !-Loopback0
R3(config-router)# exit
R3(config)# interface loopback0
R3(config-if)# ip address 3.3.3.3 255.255.255.255
R3(config-if)# exit
R3(config)# write memory
Same process-1 on R3, router-ID from Loopback0, all local networks into area-10, and Ethernet0/0 passive.
Task-2: OSPFv3 on R1 and R3
R1:
R1(config)# ipv6 unicast-routing
R1(config)# interface loopback0
R1(config-if)# ipv6 address 2001:DB8:1::1/128
R1(config-if)# exit
R1(config)# ipv6 router ospf 10
R1(config-rtr)# router-id 1.1.1.1
R1(config-rtr)# passive-interface Ethernet0/0
R1(config-rtr)# exit
R1(config)# interface Ethernet0/0
R1(config-if)# ipv6 ospf 10 area 5
R1(config-if)# exit
R1(config)# interface Ethernet0/1
R1(config-if)# ipv6 ospf 10 area 5
R1(config-if)# exit
R1(config)# interface loopback0
R1(config-if)# ipv6 ospf 10 area 5
R1(config-if)# exit
R1(config)# write memory
Enables IPv6 routing, assigns a /128 on Loopback0, creates OSPFv3 process-10 with router-ID from Loopback0, makes Ethernet0/0 passive, and binds each interface's IPv6 subnet into area-5.
R3:
R3(config)# ipv6 unicast-routing
R3(config)# interface loopback0
R3(config-if)# ipv6 address 2001:DB8:3::3/128
R3(config-if)# exit
R3(config)# ipv6 router ospf 10
R3(config-rtr)# router-id 3.3.3.3
R3(config-rtr)# passive-interface Ethernet0/0
R3(config-rtr)# exit
R3(config)# interface Ethernet0/0
R3(config-if)# ipv6 ospf 10 area 10
R3(config-if)# exit
R3(config)# interface Ethernet0/2
R3(config-if)# ipv6 ospf 10 area 10
R3(config-if)# exit
R3(config)# interface loopback0
R3(config-if)# ipv6 ospf 10 area 10
R3(config-if)# exit
R3(config)# write memory
Mirrors R1's OSPFv3 setup on R3 with process-10, router-ID from Loopback0, passive LAN interface, and all IPv6 subnets into area-10.