OSPF Operation in a Single Area NBMA Setting
A non-broadcast multi-access environment is one where there are more than two routers without a native broadcast capability. Frame Relay is a popular technology that commonly uses a NBMA implementation. Other examples of NBMA technologies are X.25 and Asynchronous Transfer Mode (ATM).
The most popular NBMA topology is frame relay, where a core router at a central site uses a single interface to connect several virtual circuits to several other sites over a frame cloud. A representation of this and other NBMA topologies is shown in Figure 4.9.
Figure 4.9. NBMA topologies.
OSPF approaches an NBMA environment ...
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