
OSPF Commands 681
area stub
Use the
area stub
command in Router OSPF Configuration mode to create a stub area for the
specified area ID. A stub area is characterized by the fact that AS External LSAs are not propagated
into the area. Removing AS External LSAs and Summary LSAs can significantly reduce the link
state database of routers within the stub area. Use the no form of the command to remove the stub
area.
Syntax
area
area-id
stub
no area
area-id
stub
•
area-id
—
Identifies the area identifier of the OSPF stub. (Range: IP address or decimal
from 0-4294967295)
Default Configuration
This command has no default configuration.
Command Mode
Router OSPF Configuration mode
User Guidelines
This command has no user guidelines.
Examples
The following examples define area 3 for the stub and then removes the stub area.
console(config-router)#area 3 stub
console(config-router)#no area 3 stub
area stub no-summary
Use the
area stub no-summary
command in Router OSPF Configuration mode to prevent
Summary LSAs from being advertised into the NSSA. Use the no form of the command to return
the Summary LSA mode to the default value.
Syntax
area
area-id
stub no-summary
no area
area-id
stub no-summary
•
area-id
—
Identifies the OSPF area to configure. (Range: IP address or decimal from 0-
4294967295)
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