R1#sh run | b 0/0.2
interface Serial0/0.2 point-to-point
 ip address 180.40.7.66 255.255.255.224
 ip ospf message-digest-key 1 md5 cisco
 frame-relay interface-dlci 102
!
router ospf 1
 router-id 11.11.11.11
 log-adjacency-changes
 auto-cost reference-bandwidth 1000
 area 0 authentication message-digest
 area 51 nssa no-redistribution no-summary
 area 200 virtual-link 3.3.3.3 message-digest-key 1 md5 notcisco
 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 1/0.2
interface Serial1/0.2 multipoint
 ip address 180.40.7.65 255.255.255.224
 ip ospf message-digest-key 1 md5 cisco
 ip ospf network point-to-point
 frame-relay interface-dlci 201
!
router ospf 1
 router-id 2.2.2.2
 log-adjacency-changes
 auto-cost reference-bandwidth 1000
 area 0 authentication message-digest
 area 51 nssa no-redistribution no-summary
 area 51 default-cost 0
 area 200 virtual-link 3.3.3.3 message-digest-key 1 md5 notcisco
 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 202.2.2.2 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
!


R3#sh run | b router
router ospf 1
 router-id 3.3.3.3
 log-adjacency-changes
 auto-cost reference-bandwidth 1000
 area 0 authentication message-digest
 area 200 virtual-link 2.2.2.2 message-digest-key 1 md5 notcisco
 area 200 virtual-link 11.11.11.11 message-digest-key 1 md5 notcisco
 redistribute connected subnets tag 3
 network 17.80.1.1 0.0.0.0 area 51
 network 180.40.7.3 0.0.0.0 area 200
 network 208.28.1.2 0.0.0.0 area 200
 neighbor 208.28.1.1
!