Configuring Ospfv3 Area Parameters; Configuration Prerequisites; Configuring A Stub Area; Configuring An Nssa Area - HP 6125XLG Layer 3 - Ip Routing Configuration Manual

Step
5. Enable an OSPFv3 process on
the interface.

Configuring OSPFv3 area parameters

OSPFv3 has the same stub area and virtual link features as OSPFv2.
After you split an OSPFv3 AS into multiple areas, the LSA number is reduced and OSPFv3 applications
are extended. To further reduce the size of routing tables and the number of LSAs, configure the
non-backbone areas at an AS edge as stub areas.
Non-backbone areas exchange routing information through the backbone area, so the backbone and
non-backbone areas (including the backbone itself) must be fully meshed. If no connectivity can be
achieved, configure virtual links.

Configuration prerequisites

Before you configure OSPFv3 area parameters, enable OSPFv3.

Configuring a stub area

All the routers attached to a stub area must be configured with the stub command. The keyword
no-summary is only available on the ABR of the stub area.
If you use the stub command with the keyword no-summary on an ABR, the ABR advertises a default
route in an Inter-Area-Prefix LSA into the stub area. No AS External LSA, Inter-Area-Prefix LSA, or other
Inter-Area-Router LSA is advertised in the area. The stub area of this kind is also known as a "totally stub
area."
To configure an OSPFv3 stub area:
Step
1. Enter system view.
2. Enter OSPFv3 view.
3. Enter OSPFv3 area view.
4. Configure the area as a stub
area.
5. (Optional.) Specify a cost for
the default route advertised to
the stub area.

Configuring an NSSA area

This feature is available in Release 2406P03 and later versions.
Command
ospfv3 process-id area area-id
[ instance instance-id ]
Command
system-view
ospfv3 [ process-id | vpn-instance
vpn-instance-name ] *
area area-id
stub
[ default-route-advertise-always |
no-summary ] *
default-cost value
353
Remarks
No OSPFv3 process is enabled on
an interface by default.
Remarks
N/A
N/A
N/A
By default, no area is configured
as a stub area.
The default setting is 1.