S5#sh run | b router
router ospf 1
 router-id 5.5.5.5
 log-adjacency-changes
 no discard-route external
 area 51 nssa
 summary-address 200.1.0.0 255.255.252.0
 redistribute rip subnets
 network 5.5.5.5 0.0.0.0 area 51
 network 208.28.1.0 0.0.0.255 area 51