Specifying SPF calculation interval

LSDB changes lead to SPF calculations. When the topology changes frequently, a large amount of network and router resources are occupied by SPF calculation. Adjust the SPF calculation interval to reduce the impact.

When network changes are not frequent, the minimum-interval is adopted. If network changes become frequent, the SPF calculation interval is incremented by incremental-interval × 2n-2 (n is the number of calculation times) each time a calculation occurs until the maximum-interval is reached.

To configure SPF calculation interval:

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter OSPF view.

ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] *

N/A

3. Specify the SPF calculation interval.

spf-schedule-interval maximum-interval [ minimum-interval [ incremental-interval ] ]

Optional.

By default, the interval is 5 seconds.