Specifying An Lsa Transmission Delay; Specifying Spf Calculation Interval - H3C S3610-28P Operation Manual

Operation Manual – IPv4 Routing
H3C S3610&S5510 Series Ethernet Switches

3.7.3 Specifying an LSA Transmission Delay

Since OSPF packets need time for traveling on links, extending LSA age time with a
delay is necessary, especially for low speed links.
Follow these steps to specify an LSA transmission delay on an interface:
Enter system view
Enter interface view
Specify an LSA
transmission delay

3.7.4 Specifying SPF Calculation Interval

The LSDB changes lead to SPF calculations. When an OSPF network changes
frequently, a large amount of network resources will be occupied, reducing the working
efficiency of routers. You can adjust the SPF calculation interval for the network to
reduce negative influence.
Follow these steps to configure SPF calculation interval:
Enter system view
Enter OSPF view
Specify SPF calculation
interval(s)
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
each time a calculation occurs, up to the maximum-interval.
To do... Use the command...
system-view
interface interface-type
interface-number
ospf trans-delay
seconds
To do... Use the command...
system-view
ospf [ process-id |
router-id router-id |
vpn-instance
instance-name ] *
spf-schedule-interval
maximum-interval
[ minimum-interval
[ incremental-interval ] ]
n-2
(n is the number of calculation times)
3-35
Chapter 3 OSPF Configuration
Remarks
—
—
Optional
1 second by default
Remarks
—
—
Optional
By default, the interval is 5
seconds.