IP R
OUTING
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- And finally, you must specify a virtual link to any OSPF area that
is not physically attached to the OSPF backbone. Virtual links can
also be used to provide a redundant link between contiguous areas
to prevent areas from being partitioned, or to merge backbone
areas.

Configuring General Protocol Settings

To implement dynamic OSPF routing, first assign VLAN groups to each
IP subnet to which this router will be attached, then use the OSPF /
General Configuration menu to enable OSPF, assign an Router ID to this
device, and set the other basic protocol parameters.
Command Attributes
General Information –
OSPF Routing Process – Enables or disables OSPF routing for all IP
interfaces on the router. (Default: Disabled)
OSPF Router ID – Assigns a unique router ID for this device within
the autonomous system. (Default: The lowest interface address)
Version Number 1 – This router only supports OSPF Version 2.
Area Border Router 1
Indicates if this router connect
directly to networks in two or
more areas. An area border
router runs a separate copy of
the Shortest Path First
algorithm, maintaining a separate routing database for each area.
AS Boundary Router
2 – Allows this router
to exchange routing
information with
boundary routers in
other autonomous
backbone area,
stub,
NSSA
ABR
AS1 ASBR AS2
ASBR