R1#sh run | b router
router ospf 1
 router-id 1.1.1.1
 log-adjacency-changes
 area 51 nssa no-summary
 area 51 default-cost 10    <-------------
 area 200 virtual-link 3.3.3.3
 redistribute connected subnets
 network 11.11.11.11 0.0.0.0 area 51
 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
!