H3C S6550X-HI Series Command Reference Manual page 2030

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.
If you specify the
arguments without specifying the
as follows:
1. OSPFv3 will wait
2. If SPF calculation is triggered within
incremental-interval
calculation times and is not less than two.
3. If the value of
calculation interval, OSPFv3 will use the maximum intervals three times consecutively and then
return to step 1.
If you specify the
intervals.
To expedite route convergence, use the
command to specify a short route calculation interval in milliseconds.
For a stable network, the minimum interval is used. If network changes become frequent, the SPF
calculation interval increases by the incremental interval × 2
maximum interval is reached. The value n is the number of calculation times.
The minimum interval and the incremental interval cannot be greater than the maximum interval.
Examples
# Set the maximum SPF calculation interval to 10 seconds, minimum interval to 500 milliseconds,
and incremental interval to 300 milliseconds.
<Sysname> system-view
[Sysname] ospfv3 100
[Sysname-ospfv3-100] spf-schedule-interval 10 500 300
stub
Use stub to configure an area as a stub area.
Use
undo stub
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
maximum-interval
conservative
maximum-interval
n-2
× 2
incremental-interval
keyword, OSPFv3 will perform SPF calculations at the maximum
conservative
to restore the default.
,
minimum-interval
keyword, OSPFv3 will perform SPF calculation
to perform the first SPF calculation.
incremental-interval
to perform an SPF calculation. The value n is the number of
n-2
× 2 has reached or exceeded the maximum route
spf-schedule-interval millisecond interval
96
, and
incremental-interval
, OSPFv3 will wait
n-2
for each calculation until the