Setting Lsa Transmission Delay; Setting Spf Calculation Interval; Setting The Lsa Generation Interval - HP FlexFabric 12900E Series Configuration Manual

Step
6. Set the LSA retransmission
interval.

Setting 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 set the LSA transmission delay on an interface:
Step
1. Enter system view.
2. Enter interface view.
3. Set the LSA transmission
delay.

Setting 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
maximum interval is reached. The value n is the number of calculation times.
To set SPF calculation interval:
Step
1. Enter system view.
2. Enter OSPFv3 view.
3. Set
calculation interval.

Setting the LSA generation interval

You can adjust the LSA generation interval to protect network resources and routers from being over
consumed by frequent network changes.
Command
ospfv3
interval
instance-id ]
Command
system-view
interface
interface-number
ospfv3
[ instance instance-id ]
Command
system-view
ospfv3 [ process-id | vpn-instance
vpn-instance-name ] *
spf-schedule-interval
the SPF
maximum-interval
[ incremental-interval ] ]
Remarks
The default setting is 5 seconds.
timer retransmit
The LSA retransmission interval cannot
[ instance
be too short. Otherwise, unnecessary
retransmissions will occur.
interface-type
trans-delay seconds
[ minimum-interval
410
Remarks
N/A
N/A
By default, the LSA transmission
delay is 1 second.
n-2
for each calculation until the
Remarks
N/A
N/A
By default:
•
The maximum interval is 5
seconds.
•
The minimum interval is 50
milliseconds.
•
The incremental interval is
200 milliseconds.