PLANET WGS3-2820 - Manual (Page 227)

User’s Manual of WGS3-2820/WGS3-5220
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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.
Figure 4-6-20 OSPF Area Configuration
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.