H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches Chapter 3 OSPF Configuration
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To do… Use the command… Remarks
Enter system view
system-view
—
Enter OSPF view
ospf [ process-id |
router-id router-id ] *
—
Specify SPF calculation
interval(s)
spf-schedule-interval
maximum-interval
[ minimum-interval
[ incremental-interval ] ]
Optional
By default, the interval is 5
seconds.
 Note:
With this task configured, when network changes are not frequent, SPF calculation
applies at the minimum-interval. If network changes become frequent, SPF calculation
interval is incremented by incremental-interval•2
n-2
(n is the number of calculation times)
each time a calculation occurs, up to the maximum-interval.
3.7.5 Specifying the LSA Minimum Repeat Arrival Interval
After receiving the same LSA as the previously received LSA within the LSA minimum
repeat arrival interval, an interface discards the LSA.
Follow these steps to configure the LSA minimum repeat arrival interval:
To do… Use the command… Remarks
Enter system view
system-view
—
Enter OSPF view
ospf [ process-id |
router-id router-id ] *
—
Configure the LSA
minimum repeat arrival
interval
lsa-arrival-interval
interval
Optional
Defaults to 1000
milliseconds.
 Note:
The interval set with the lsa-arrival-interval command should be smaller or equal to
the interval set with the lsa-generation-interval command.
3.7.6 Specifying the LSA Generation Interval
With this feature configured, you can protect network resources and routers from being
over consumed due to frequent network changes.