Stub (Ospf Area View) - 3Com S7906E Command Reference Manual

<Sysname> system-view
[Sysname] snmp-agent trap enable ospf 1
spf-schedule-interval
Syntax
spf-schedule-interval maximum-interval [ minimum-interval [ incremental-interval ] ]
undo spf-schedule-interval
View
OSPF view
Default Level
2: System level
Parameters
maximum-interval: Maximum OSPF route calculation interval in seconds, in the range 1 to 60.
minimum-interval: Minimum OSPF route calculation interval in milliseconds, in the range 10 to 60000,
which defaults to 0.
incremental-interval: Incremental value in milliseconds, in the range 10 to 60000, which defaults to
5000.
Description
Use the spf-schedule-interval command to set the OSPF SPF calculation interval.
Use the undo spf-schedule-interval command to restore the default.
The interval defaults to 5 seconds.
Based on its LSDB, an OSPF router calculates the shortest path tree with itself being the root, and uses
it to determine the next hop to a destination. Through adjusting the SPF calculation interval, you can
protect bandwidth and router resources from being over-consumed due to frequent network changes.
With this command configured, when network changes are not frequent, SPF calculation applies at the
minimum-interval. If network changes become frequent, the SPF calculation interval is incremented by
the incremental-interval each time a calculation happens, up to the maximum-interval.
Examples
# Configure the SPF calculation maximum interval as 10 seconds, minimum interval as 500
milliseconds and incremental interval as 200 milliseconds.
<Sysname> system-view
[Sysname] ospf 100
[Sysname-ospf-100] spf-schedule-interval 10 500 200

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