This is example topology hub-spoke use frame-relay, but between spoke there isn’t mapping.

-102—201– R2
R1 –|
-103—301– R3

R1 hub
ip add 192.168.0.1 255.255.255.0
frame map ip 192.168.0.2 102 broadcast
frame map ip 192.168.0.3 103 broadcast

R2 spoke
ip add 192.168.0.2 255.255.255.0
frame map ip 192.168.0.1 201 broadcast

R3 spoke
ip add 192.168.0.3 255.255.255.0
frame map

Read original post at http://awanetwork.blogspot.com/2008/06/frame-relay-hub-spoke-without-mapping.html