378
Step Command
Remarks
4.
Configure the dead interval.
ospfv3 timer dead
seconds
[
instance
instance-id
]
By default, the dead interval on P2P and
broadcast interfaces is 40 seconds.
The dead interval set on neighboring
interfaces cannot be too short.
Otherwise, a neighbor is easily
considered down.
5.
Configure the poll interval.
ospfv3 timer poll
seconds
[
instance
instance-id
]
By default, the poll interval is 120
seconds.
6.
Configure 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.
When network changes are infrequent, the
minimum-interval
is adopted. If network changes become
frequent, the SPF calculation interval is incremented by
incremental-interval
× 2
n-2
(n is the number of
calculation times) for each calculation until the
maximum-interval
is reached.
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
