D-Link DGS-6600-48TS Manual page 52

DGS-6604 m
Example
Switch# configure terminal
Switch(config)# router ospf
Switch(config-router)# area 1 nssa
CLI Reference Guide
An NSSA allows external routes to be advertised to the area in type 7 link state
advertisement (LSA). These routes are then leaked into other areas. Although,
the external routes from other areas still do not enter the NSSA.
Use the area nssa command to simplify the administration of connecting a
central site using OSPF to a remote site that is using a different routing protocol.
Use this command to extend OSPF to cover the remote connection by defining
the area between the central router and the remote router as an NSSA.
For ASBR NSSA re-distribution, external routes will only be redistributed to the
NSSA when redistribution is configured for the associated OSPF process.
The external routes from other areas within the same AS will not be injected to
the NSSA.
For an ASBR, a Type 7 default route will be generated into the NSSA when it
exists in the redistributed routes.
For an ABR, when this option is specified, the type-7 default route will always be
generated into the NSSA.
If there are multiple default routes generated into the NSSA, the following priority
will be followed: Type 3 priority > Type 7 priority.
This command show how to set the nssa area:
Verify the settings by entering the show ip ospf command.
area nssa
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