F3215-HP Load Balancing Module Network Management Configuration Guide-6PW101

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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 not frequent, 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) each time a calculation occurs until the maximum-interval is reached.
To configure SPF calculation interval:
Ste
p
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.
Specifying 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 configure the LSA arrival interval:
Ste
p
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. Configure the LSA arrival
interval.
lsa-arrival-interval interval
Optional.
The default interval is
1000 milliseconds.
Make sure this interval is
smaller than or equal to
the interval set with the
lsa-generation-interval
command.
Specifying 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.
When network changes are not frequent, LSAs are generated at the minimum-interval. If network
changes become frequent, the LSA generation interval is incremented by incremental-interval × 2
n-2
(n is
the number of generation times) each time a LSA generation occurs until the maximum-interval is
reached.
To configure the LSA generation interval: