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Frame Relay
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Partial Meshed Networks
You can use subinterfaces to mitigate partial meshed Frame Relay networks
and split horizon protocols. For example, say you were running the IP pro-
tocol on a LAN network. If, on the same physical network, Router A can talk
to Router B, and Router B to Router C, you can usually assume that Router A
can talk to Router C. Though this is true with a LAN, it's not true with a
Frame Relay network, unless Router A has a PVC to Router C.
In Figure 10.5, Network 1 is configured with five locations. To be able to
make this network function, you would have to create a meshed network as
shown in Network 2. However, even though Network 2's example works,
it's an expensive solution--configuring subinterfaces as shown in the Net-
work 3 solution is much more cost-effective.
F I G U R E 1 0 . 5
Partial meshed network examples
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