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HP 6125XLG Configuration Manual: Configuring The Shortest Spf Calculation Interval; Configuring The Minimum Lsr Receiving Interval; Configuring The Minimum Lsr Refresh Interval

R2306-hp 6125xlg blade switch fcoe configuration guide.
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Step
2.
Enter VSAN view.
3.
Enable FSPF for the VSAN.

Configuring the shortest SPF calculation interval

When the LSDB changes, SPF calculations occur, which consume CPU resources. To prevent frequent SPF
calculations from consuming too many CPU resources, you can configure the shortest SPF calculation
interval.
The shortest SPF calculation interval defines the minimum interval between two consecutive SPF
calculations. A smaller value means that FSPF responds faster to fabric changes by recalculating routes
in a VSAN, but it requires more CPU resources.
To configure the shortest SPF calculation interval:
Step
1.
Enter system view.
2.
Enter VSAN view.
3.
Configure the shortest SPF
calculation interval.

Configuring the minimum LSR receiving interval

The minimum LSR receiving interval specifies the time between receiving LSRs in a VSAN. Any LSR
instances of the same LSR received within this time are dropped. This helps avoid frequent SPF
calculations caused by LSDB updating.
To configure the minimum LSR receiving interval:
Step
1.
Enter system view.
2.
Enter VSAN view.
3.
Configure the minimum
LSR receiving interval.

Configuring the minimum LSR refresh interval

The minimum LSR refresh interval specifies the interval at which LSRs are refreshed. To reduce SPF
calculations and LSR flooding in a fabric caused by frequent LSR refreshing, the switch cannot refresh
local LSRs within this interval.
To configure the minimum LSR refresh interval:
Command
vsan vsan-id
fspf enable
Command
system-view
vsan vsan-id
fspf spf-hold-time value
Command
system-view
vsan vsan-id
fspf min-ls-arrival value
59
Remarks
N/A
By default, FSPF is enabled after a VSAN is
created.
Remarks
N/A
N/A
The default setting is 0 second.
Remarks
N/A
N/A
The default setting is 1 second.

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