HPE FlexNetwork 5510 HI Series User Manual

87
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
n-2
for each calculation until the
maximum interval is reached. The value n is the number of calculation times.
To set the 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. Set 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.
Setting the LSA arrival interval
If OSPF receives an LSA that has the same LSA type, LS ID, and router ID as the previously received
LSA within the LSA arrival interval, OSPF discards the LSA to save bandwidth and route resources.
To set the LSA arrival 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. Set the LSA arrival interval.
lsa-arrival-interval
interval
The default setting is 1000
milliseconds.
Make sure this interval is smaller
than or equal to the interval set with
the
lsa-generation-interva
l
command.
Setting the LSA generation interval
Adjust the LSA generation interval to protect network resources and routers from being overwhelmed
by LSAs at the time of frequent network changes.
For a stable network, the minimum interval is used. If network changes become frequent, the LSA
generation interval is incremented by the incremental interval × 2
n-2
for each generation until the
maximum interval is reached. The value n is the number of generation times.

HPE FlexNetwork 5510 HI Series Specifications

General

Brand	HPE
Model	FlexNetwork 5510 HI Series
Category	Switch
Language	English