R1#sh run | b router
router ospf 1
 router-id 1.1.1.1
 log-adjacency-changes
 area 51 nssa no-redistribution no-summary
 area 200 virtual-link 3.3.3.3
 redistribute connected subnets tag 1
 network 180.40.7.66 0.0.0.0 area 0
 network 208.28.1.1 0.0.0.0 area 200
 network 208.28.1.66 0.0.0.0 area 51
!

R2#sh run | b router
router ospf 1
 router-id 2.2.2.2
 log-adjacency-changes
 area 51 nssa no-redistribution no-summary
 area 200 virtual-link 3.3.3.3
 redistribute connected subnets tag 2
 network 180.40.7.2 0.0.0.0 area 200
 network 180.40.7.65 0.0.0.0 area 0
 network 208.28.1.3 0.0.0.0 area 200
 network 208.28.1.129 0.0.0.0 area 51
!

S5#sh run | b ospf
router ospf 1
 router-id 5.5.5.5
 log-adjacency-changes
 area 51 nssa
 redistribute rip subnets tag 5
 network 208.28.1.65 0.0.0.0 area 51
 network 208.28.1.130 0.0.0.0 area 51
!

S5#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route

Gateway of last resort is 208.28.1.129 to network 0.0.0.0

R    200.1.1.0/24 [120/1] via 217.57.100.2, 00:00:15, Vlan16
R    200.1.2.0/24 [120/1] via 217.57.100.2, 00:00:15, Vlan16
C    217.57.100.0/24 is directly connected, Vlan16
R    200.1.3.0/24 [120/1] via 217.57.100.2, 00:00:15, Vlan16
     208.28.1.0/24 is variably subnetted, 2 subnets, 2 masks
C       208.28.1.128/27 is directly connected, Vlan20
C       208.28.1.64/28 is directly connected, Vlan10
O*IA 0.0.0.0/0 [110/2] via 208.28.1.129, 00:07:08, Vlan20
               [110/2] via 208.28.1.66, 00:07:08, Vlan10
S5#