conf t
hostname HQ-R1
interface loopback 1
ip address 10.1.1.1 255.255.255.0
interface serial 0/0/1
ip address 10.1.123.1 255.255.255.0
encapsulation frame-relay ietf
no frame-relay inverse-arp
frame-relay map ip 10.1.123.1 102
frame-relay map ip 10.1.123.2 102
frame-relay map ip 10.1.123.3 103
no shutdown

router ospf 1
network 10.1.123.0 0.0.0.255 area 0
network 10.1.1.0 0.0.0.255 area 0
exit
interface loopback 1
ip ospf network point-to-point

router ospf 1
neighbor 10.1.123.2
neighbor 10.1.123.3

router ospf 1
no neighbor 10.1.123.2
no neighbor 10.1.123.3

interface serial 0/0/1
ip ospf network point-to-multipoint
frame-relay map ip 10.1.123.2 102 broadcast
frame-relay map ip 10.1.123.3 103 broadcast