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

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Parameters
trap-interval: Specifies the notification output interval in the range of 1 to 60 seconds.
trap-number: Specifies the number of output notifications in a specific time, in the range of 0 to 300.
Examples
# Configure OSPF to output up to 10 SNMP notifications within 5 seconds.
<Sysname> system-view
[Sysname] ospf 100
[Sysname-ospf-100] snmp trap rate-limit interval 5 count 10
spf-schedule-interval
Use spf-schedule-interval to set the OSPF SPF calculation interval.
Use undo spf-schedule-interval to restore the default.
Syntax
spf-schedule-interval maximum-interval [ minimum-interval [ incremental-interval ] ]
undo spf-schedule-interval
Default
The maximum calculation interval is 5 seconds, the minimum interval is 50 milliseconds, and the
incremental interval is 200 milliseconds.
Views
OSPF view
Predefined user roles
network-admin
Parameters
maximum-interval: Specifies the maximum OSPF SPF calculation interval in the range of 1 to 60 seconds.
minimum-interval: Specifies the minimum OSPF SPF calculation interval in the range of 10 to 60000
milliseconds.
incremental-interval: Specifies the incremental OSPF SPF calculation interval in the range of 10 to 60000
milliseconds.
Usage guidelines
Based on the LSDB, an OSPF router uses SPF to calculate a shortest path tree with itself as the root. OSPF
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, OSPF 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.