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OSPF Area Terminology

In OSPF, a single AS can be divided into smaller groups called areas. This reduces the number of link-state advertisements and other OSPF overhead traffic sent on the network, and it reduces the size of the topological database that each router must maintain.

This section discusses the following topics:

Areas
Area Border Routers
Backbone Areas
AS Boundary Routers
Stub Areas
Not-So-Stubby Areas
Transit Areas

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