Full Mesh Network
When the frame relay network is configured in a full mesh, meaning every router is connected to every other router in the network much like a LAN, frame relay is configured with a single subnet. For example if the subnet 192.168.1.0/24 was used, R1 could be 192.168.1.1, R2 192.168.1.2, and R3 192.168.1.3 and so on.
Partial Mesh Network
Much like a hub and spoke network a partial network must use different subnets between each pair of routers for frame relay. Example would be the network between R1 & R2 configured with network
192.168.1.0/24 and R1 to R3 configured with 192.168.2.0/24.