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Parameter Description
Router Id The switch IP that is used as the OSPF Router ID.
Area ID Configuration Defines an area within which all OSPF routers actively
exchange routing information to ensure that they all have an
identical link state database.
OSPF Area Range
Configuration
Defines a range of subnetwork addresses. An area range is
used to summarize route information exchanged between Area
Border Routers.
OSPF Virtual Link
Configuration
Defines a virtual link that can be used to connect an OSPF area
not physically adjacent to the OSPF backbone, or to create a
backup link to any area.
OSPF Host Route
Configuration
Configures the route to a specific host within the area.
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 (see chapter 2 “Configuring OSPF”), 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.
IP Menu: OSPF Area Configuration
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Area ID Type
192.168.2.0 NORMAL
192.168.3.0 NORMAL
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Parameter Description
Area ID An OSPF area identifier configured for a group of OSPF routers.
(For information on how to assign this identifier to a specific
interface, see chapter 2 “Configuring OSPF”.)