R0106-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)

402
Ste
p
Command Remarks
5. (Optional.) Specify a cost for
the default route advertised to
the stub area.
default-cost value The default setting is 1.
Configuring an NSSA area
An NSSA area can import external routes into the OSPFv3 routing domain while retaining other stub
area characteristics.
To configure an NSSA area, configure the nssa command on all the routers attached to the area.
To configure a totally NSSA area, configure the nssa no-summary command on the ABR. The ABR of a
totally NSSA area does not advertise inter-area routes into the area.
To configure an NSSA area:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter OSPFv3 view.
ospfv3 [ process-id | vpn-instance
vpn-instance-name ] *
N/A
3. Enter OSPFv3 area view.
area area-id N/A
4. Configure the area as an
NSSA area.
nssa [ default-route-advertise
[ cost cost | nssa-only |
route-policy route-policy-name |
tag tag | type type ] * |
no-import-route | no-summary |
[ translate-always |
translate-never ] | suppress-fa |
translator-stability-interval value ]
*
By default, no area is configured as
an NSSA area.
5. (Optional.) Specify a cost for
the default route advertised to
the NSSA area.
default-cost cost
The default setting is 1.
This command takes effect only on
the ABR/ASBR of an NSSA or totally
NSSA area.
Configuring an OSPFv3 virtual link
You can configure a virtual link to maintain connectivity between a non-backbone area and the
backbone, or in the backbone itself.
IMPORTANT:
• Both ends of a virtual link are ABRs that must be configured with the vlink-peer command.
• Do not configure virtual links in the areas of a GR-capable process.
To configure a virtual link: