Routing Protocol Configuration Command Set
Configuring OSPF
13-52 Matrix DFE-Platinum and Diamond Series Configuration Guide
13.2.3.18 area nssa
Use this command to configure an area as a not so stubby area (NSSA). An NSSA allows some
external routes represented by external Link State Advertisements (LSAs) to be imported into it.
This is in contrast to a stub area that does not allow any external routes. External routes that are not
imported into an NSSA can be represented by means of a default route. This configuration is used
when an OSPF internetwork is connected to multiple non-OSPF routing domains.
area area-id nssa [default-information-originate]
Syntax Description
Command Syntax of the “no” Form
The “no” form of this command changes the NSSA back to a plain area:
no area area-id nssa [default-information-originate]
Command Type
Router command.
Command Mode
Router configuration: Matrix>Router1(config-router)#
Command Defaults
If default-information-originate is not specified, no default type will be
generated.
Example
This example shows how to configure area 10 as an NSSA area:
area-id Specifies the NSSA area. Valid values are decimal values or
IP addresses.
default-
information-
originate
(Optional) Generates a default of Type 7 into the NSSA.
This is used when the router is an NSSA ABR.
Matrix>Router1(config)#router ospf 1
Matrix>Router1(config-router)#area 10 nssa default-information-originate
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