default-route-advertise: Usable on an NSSA ABR or an ASBR only. If it is configured on an NSSA ABR,
the ABR generates a default route in a Type-7 LSA into the NSSA area regardless of whether a default
route is configured. If it is configured on an ASBR, only a default route is configured on the ASBR can it
generates the default route in a Type-7 LSA into the attached area.
no-import-route: Usable only on an NSSA ABR that is also the ASBR of the OSPF routing domain to
disable redistributing routes in Type-7 LSAs into the NSSA area, making sure that correct external routes
no-summary: Usable only on an NSSA ABR to advertise a default route in a Type-3 summary LSA into the
NSSA area and to not advertise other summary LSAs into the area. Such an area is a totally NSSA area.
translate-always: Specifies the NSSA ABR as a translator to translate Type-7 LSAs to Type-5 LSAs.
translator-stability-interval value: Specifies the stability interval of the translator, during which the
translator can maintain its translating capability after a device with a higher priority becomes a new
translator. The value argument is the stability interval in seconds, which is in the range of 0 to 900 and
defaults to 0 (which means the translator does not maintain its translating capability if a new translator
Use nssa to configure the current area as an NSSA area.
Use undo nssa to restore the default.
By default, no NSSA area is configured.
All routers attached to an NSSA area must be configured with the nssa command in area view.
Related commands: default-cost.
# Configure Area 1 as an NSSA area.
[Sysname] ospf 100
[Sysname-ospf-100] area 1
2: System level