Planet Networking & Communication WGS3-2820 User Manual page 227

4.6.4.3 OSPF Area Configuration
OSPF protocol broadcast messages (i.e., Link State Advertisements) are restricted by area to limit their impact on
network performance. Before assigning an Area ID to a specific OSPF interface, you must first specify the Area ID
in this table. Each entry in this table identifies a logical group of OSPF routers that actively exchange Link State
Advertisements (LSAs) to ensure that they share an identical view of the network topology. You can configure the
area as a normal one which can send and receive external Link State Advertisements (LSAs), a stubby area that
cannot send or receive external LSAs, or a not-so-stubby area (NSSA) that can import external route information
into its area.
Selection Criteria
。 Area ID - Select the area to be configured.
Configurable Data
。 Import Summary LSAs - Select enable or disable from the pulldown menu. If you select enable summary LSAs will
be imported into stub areas.
Figure 4-6-20 OSPF Area Configuration
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User's Manual of WGS3-2820/WGS3-5220