IPv6 Configuration Guide K/KA/KB.15.15

type1 : Calculate external route cost for a type-7-LSA default route as the sum
of (1) the external route cost assigned by the ASBR plus (2) the internal cost
from the router with traffic for the external route to the ASBR advertising the
route.
type2 : Use the external route cost assigned by the ASBR advertising the route.
Default: Enabled with metric-type type2.
NOTE: Different routers in the NSSA can be configured with different
metric-type values.
no-summary
Where the routing switch is an ABR for a stub area or an NSSA, this option
reduces the amount of LSA traffic entering the area from the backbone by
replacing the injection of inter-area-prefix-LSA routes and type-7-LSA default
external routes with injection of an inter-area-prefix-LSA default route.
Default: Disabled
For more information on this topic, see “Not-so-stubby-area (NSSA)” (page 253),
“Stub area” (page 253), and “About replacing inter-area-prefix-LSAs and
type-7-external-LSA default routes with an AS-external-LSA default route” (page 254).
Using no area ospf3-area-id nssa no-summary resets the routing
switch to the state where injection of inter-area-prefix-LSA routes and the
type-7-LSA default external routes is enabled with metric-type set to type2.
Example 131 Creating stub area and NSSA assignments
The following examples of configuring a stub area and an NSSA on a routing switch use an
(arbitrary) cost of "15."
HP Switch(ospf3)# area 2 stub metric-cost 15
Assigns a stub area with a cost of 15.
HP Switch(ospf3)# area 3 nssa metric-cost 15
Assigns an NSSA with a cost of 15 and, by default, uses a Network-LSA default
cost metric for Type-7-LSA (external) routes received from the backbone.
HP Switch(ospf3)# area 4 nssa metric-cost 15 no-summary
Assigns an NSSA with a cost of 15, blocks injection of Inter-Area-Prefix- LSA routes,
and starts injection of Inter-Area-Prefix-LSA default routes from the backbone.
HP Switch(ospf3)# area 5 nssa metric-cost 15 metric-type type1
Sets the cost metric type for Type-7- LSA default routes injected into the NSSA.
Enabling OSPFv3 on an interface and assigning one or more VLANs to each area
After you define an OSPFv3 area, you can assign one or more VLANs to it. When a VLAN is
assigned to an area, all currently configured IPv6 addresses in the VLAN are automatically included
in the assignment.
NOTE: All static VLANs configured on a routing switch configured for OSPFv3 must be assigned
to one of the defined areas in the AS.
Configuring OSPFv3 on the routing switch 213