4-64
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
stub (OSPF area view)
Syntax
stub
[
no-summary
]
undo stub
View
OSPF area view
Default Level
2: System level
Parameters
no-summary
: Usable only on a stub ABR. With it configured, the ABR advertises only a default route
in a Summary LSA into the stub area (such a stub area is known as a totally stub area).
