Nssa; Ospf - Huawei quidway s3526 series Getting Started

Command Manual - Routing Protocol
Quidway S3500 Series Ethernet Switches

3.1.30 nssa

Syntax
nssa [ default-route-advertise ] [ no-import-route ] [ no-summary ]
undo nssa
View
OSPF Area view
Parameter
default-route-advertise: Import default route to NSSA area.
no-import-route: Configure not to import route to NSSA area.
no-summary: ABR is disabled to transmit summary_net LSAs to the NSSA area.
Description
Using nssa command, you can configure the type of an OSPF area as NSSA area.
Using undo nssa command, you can cancel the function.
By default, NSSA area is not configured.
For all the routers connected to the NSSA area, the command nssa must be used to
configure the area as the NSSA attribute.
The default-route-advertise parameter is used to generate default type-7 LSA. No
matter whether there is route 0.0.0.0 in routing table on ABR, type-7 LSA default route
will be generated always. Only when there is route 0.0.0.0 in routing table on ASBR, will
type-7 LSA default route be generated.
On ASBR, the no-import-route parameter enables the external route imported by
OSPF through import-route command not to be advertised to NSSA area.
Example
# Configure area 1 as NSSA area.
[Quidway-ospf] area 1
[Quidway-ospf-area-0.0.0.1] network 36.0.0.0 0.255.255.255
[Quidway-ospf-area-0.0.0.1] nssa

3.1.31 ospf

Syntax
ospf
undo ospf
Huawei Technologies Proprietary
3-32
Chapter 3 OSPF Configuration Commands