358
Step Command Remarks
5. Set the poll interval.
ospfv3 timer poll
seconds
[
instance
instance-id ]
By default, the poll interval is 120
seconds.
6. Set the LSA retransmission
interval.
ospfv3 timer retransmit
interval [
instance
instance-id ]
The default setting is 5 seconds.
The LSA retransmission interval cannot
be too short. Otherwise, unnecessary
retransmissions will occur.
Specifying LSA transmission delay
Each LSA in the LSDB has an age that is incremented by 1 every second, but the age does not
change during transmission. Therefore, it is necessary to add a transmission delay into the age time,
especially for low-speed links.
To specify the LSA transmission delay on an interface:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter interface view.
interface
interface-type
interface-number
N/A
3. Specify the LSA transmission
delay.
ospfv3 trans-delay
seconds
[
instance
instance-id ]
By default, the LSA transmission
delay is 1 second.
Specifying SPF calculation interval
LSDB changes result in SPF calculations. When the topology changes frequently, a large amount of
network and router resources are occupied by SPF calculation. You can adjust the SPF calculation
interval to reduce the impact.
For a stable network, the minimum interval is used. If network changes become frequent, the SPF
calculation interval is incremented by the incremental interval × 2
n-2
for each calculation until the
maximum interval is reached. The value n is the number of calculation times.
To configure SPF calculation interval:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter OSPFv3 view.
ospfv3
[
process-id |
vpn-instance
vpn-instance-name ] *
N/A
3. Specify the SPF
calculation interval.
spf-schedule-interval
maximum-interval [ minimum-interval
[ incremental-interval ] ]
By default:
• The maximum interval is 5
seconds.
• The minimum interval is 50
milliseconds.
• The incremental interval is
200 milliseconds.
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