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IP R
OUTING
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CLI - This example summarizes all the routes for area 1. Note that the
default for the area range command is to advertise the route summary.
The configured summary route is shown in the list of information
displayed for area 1.
Configuring OSPF Interfaces
You should specify a routing interface for any local subnet that needs to
communicate with other network segments located on this router or
elsewhere in the network. First configure a VLAN for each subnet that will
be directly connected to this router, assign IP interfaces to each VLAN
(i.e., one primary interface and one or more secondary interfaces), and
then use the OSPF / Network Area Address Configuration page to assign
an interface address range to an OSPF area.
After assigning a routing interface to an OSPF area, you need to use the
OSPF / Interface Configuration page to configure the interface-specific
parameters used by OSPF to select the designated router, control the
timing of link state advertisements, set the cost used to select preferred
paths, and specify the method used to authenticate routing messages.
Console(config-router)#area 0.0.0.1 range 10.1.1.0 255.255.255.0
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Console(config-router)#end
Console#show ip ospf
Routing Process with ID 10.1.1.253
Supports only single TOS(TOS0) route
Number of area in this router is 4
Area 0.0.0.0 (BACKBONE)
Number of interfaces in this area is 0
SPF algorithm executed 47 times
Area 0.0.0.1
Number of interfaces in this area is 3
SPF algorithm executed 14 times
Area ranges are
255.255.255.0/24 Active
Console#