Chapter 29
| IP Routing Commands
Open Shortest Path First (OSPFv2)
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Example
Console(config-router)#area 10.3.9.0 default-cost 10
Console(config-router)#
Related Commands
area stub (853)
area nssa (851)
area range This command summarizes the routes advertised by an Area Border Router (ABR).
Use the no form to disable this function.
Syntax
[no] area area-id range ip-address netmask [advertise | not-advertise]
area-id - Identifies an area for which the routes are summarized. The area ID
can be in the form of an IPv4 address or as a four octet unsigned integer
ranging from 0-4294967295.
ip-address - Base address for the routes to summarize.
netmask - Network mask for the summary route.
advertise - Advertises the specified address range.
not-advertise - The summary is not sent, and the routes remain hidden
from the rest of the network.
Command Mode
Router Configuration
Default Setting
Disabled
Command Usage
â—† This command can be used to summarize intra-area routes and advertise this
information to other areas through Area Border Routers (ABRs).
â—† If the network addresses within an area are assigned in a contiguous manner,
the ABRs can advertise a summary route that covers all of the individual
networks within the area that fall into the specified range using a single area
range command.
â—† If routes are set to be advertised by this command, the router will issue a Type 3
summary LSA for each address range specified by this command.
â—† This router supports up 64 summary routes for area ranges.
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