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Default 
The maximum SPF calculation interval is 5 seconds, the minimum interval is 50 milliseconds, and the 
incremental interval is 200 milliseconds. 
Views 
OSPFv3 view 
Predefined user roles 
network-admin 
Parameters 
maximum-interval: Specifies the maximum OSPFv3 route calculation interval in the range of 1 to 60 
seconds. 
minimum-interval: Specifies the minimum OSPFv3 route calculation interval in the range of 10 to 60000 
milliseconds. 
incremental-interval: Specifies the incremental OSPFv3 route calculation interval in the range of 10 to 
60000 milliseconds. 
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 overconsumption of bandwidth and router resources due to frequent 
topology changes. 
For a stable network, the minimum interval is used. If network changes become frequent, the SPF 
calculation interval is incremented by the incremental interval for each calculation 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