R1#sh run | b router
router ospf 1
 router-id 1.1.1.1
 log-adjacency-changes
 no discard-route external
 area 51 nssa no-redistribution no-summary
 area 200 virtual-link 3.3.3.3
 summary-address 200.1.0.0 255.255.252.0
 summary-address 217.57.0.0 255.255.0.0
 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
 no discard-route external
 area 51 nssa no-redistribution no-summary
 area 200 virtual-link 3.3.3.3
 summary-address 200.1.0.0 255.255.252.0
 summary-address 217.57.0.0 255.255.0.0
 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
!