Using Site Segmentation with Multiple Frame PVCs
Backbone
Router (R1)
Site A
Router (R4)
Frame
Relay
Cloud
Site B
Router (R5)
Site C
Router (R6)
The advantage to this design is that traffic of one type can be directed down
one PVC while other data types can get their own PVC pipe.The disadvantage is
that this means much more expense than the VLAN methodology. For those reasons,
the most accepted manner of WAN design for simplifying the LAN management
is to use VLANs across the entire LAN and WAN topology.