HP MSR2000/3000/4000 Router Series Layer 3 - IP Routing Command Reference

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Usage guidelines
Based on the LSDB, an OSPFv3 router uses SPF to calculate a shortest path tree with itself being the root.
OSPFv3 uses the shortest path tree to determine the next hop to a destination. By adjusting the SPF
calculation interval, you can prevent bandwidth and router resources from being over-consumed due to
frequent topology changes.
When network changes are not frequent, OSPFv3 performs SPF calculations at the minimum-interval. If
network changes become frequent, the SPF calculation interval is incremented by the incremental-interval
each time a calculation happens until the maximum-interval is reached.
The minimum interval and the incremental interval cannot be greater than the maximum interval.
Examples
# Configure the maximum SPF calculation interval as 10 seconds, minimum interval as 500 milliseconds
and incremental interval as 300 milliseconds.
<Sysname> system-view
[Sysname] ospfv3 100
[Sysname-ospfv3-100] spf-schedule-interval 10 500 300
stub (OSPFv3 area view)
Use stub to configure an area as a stub area.
Use undo stub to restore the default.
Syntax
stub [ default-route-advertise-always | no-summary ] *
undo stub
Default
No area is configured as a stub area.
Views
OSPFv3 area view
Predefined user roles
network-admin
Parameters
default-route-advertise-always: Enables the ABR to always advertise the default route.
no-summary: Enables the ABR of a stub area to advertise only 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."
Usage guidelines
To remove the no-summary configuration on an ABR, execute the stub command again to overwrite it.
To configure an area as a stub area, issue the stub command on all routers attached to the area.
Examples
# Configure OSPFv3 area 1 as a stub area.
<Sysname> system-view
[Sysname] ospfv3 1