R1#sh run | b interface Serial0/0.1

!
interface Loopback0
 ip address 1.1.1.1 255.255.255.0
!
interface Serial0/0.1 point-to-point
 ip address 208.28.1.1 255.255.255.248
 ip ospf network non-broadcast
 ip ospf priority 0
 frame-relay interface-dlci 103
!
router ospf 1
 router-id 1.1.1.1
 log-adjacency-changes
 redistribute connected subnets
 network 208.28.1.1 0.0.0.0 area 200
!

R2#
!
interface Loopback0
 ip address 2.2.2.2 255.255.255.0
!
!
interface Serial1/0.1 multipoint
 ip address 208.28.1.3 255.255.255.248
 ip ospf priority 0
 frame-relay map ip 208.28.1.2 203 broadcast
!
router ospf 1
 router-id 2.2.2.2
 log-adjacency-changes
 redistribute connected subnets
 network 208.28.1.3 0.0.0.0 area 200
!


R3#sh run | b Loop
interface Loopback0
 ip address 3.3.3.3 255.255.255.0
!
interface Serial1/0
 ip address 208.28.1.2 255.255.255.248
 encapsulation frame-relay
 ip split-horizon
 frame-relay map ip 208.28.1.1 301 broadcast
 frame-relay map ip 208.28.1.3 302 broadcast
 no frame-relay inverse-arp
!
router ospf 1
 router-id 3.3.3.3
 log-adjacency-changes
 redistribute connected subnets
 network 208.28.1.2 0.0.0.0 area 200
 neighbor 208.28.1.1
 neighbor 208.28.1.3
!