HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Routing Confi - Page 90

Specifying SPF calculation interval, is reached.

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Specifying SPF calculation interval LSDB changes lead to SPF calculations. When the topology changes frequently, a large amount of network and router resources are occupied by SPF calculation. 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 × 2n-2 (n is the number of calculation times) each time a calculation occurs until the maximum-interval is reached. To configure SPF calculation interval: Step 1. Enter system view. 2. Enter OSPF view. 3. Specify the SPF calculation interval. Command system-view ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] * spf-schedule-interval maximum-interval [ minimum-interval [ incremental-interval ] ] Remarks N/A N/A Optional. By default, the interval is 5 seconds. Specifying the LSA arrival interval After receiving the same LSA as the previously received LSA within the LSA arrival interval, OSPF discards the LSA. To configure the LSA arrival interval: Step 1. Enter system view. 2. Enter OSPF view. 3. Configure the LSA arrival interval. Command system-view ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] * lsa-arrival-interval interval Remarks N/A N/A Optional. 1000 milliseconds by default. 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 × 2n-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: 80

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80
Specifying SPF calculation interval
LSDB changes lead to SPF calculations. When the topology changes frequently, a large amount of
network and router resources are occupied by SPF calculation. 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
× 2n-2 (n is the number of
calculation times) each time a calculation occurs until the
maximum-interval
is reached.
To configure 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.
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
After receiving the same LSA as the previously received LSA within the LSA arrival interval, OSPF discards
the LSA.
To configure 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.
Configure the LSA arrival
interval.
lsa-arrival-interval
interval
Optional.
1000 milliseconds by default.
Make sure this interval is
smaller than or equal to the
interval set with the
lsa-generation-interva
l
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
× 2n-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: