R211x-HP Flexfabric 11900 FCoE Configuration Guide

Configuring the shortest SPF calculation interval

SPF calculations occur when the LSDB changes. To limit the amount of CPU resources consumed by

frequent SPF calculations, you can change 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:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter VSAN view.

vsan vsan-id N/A

3. Configure the shortest SPF

calculation interval.

fspf spf-hold-time value The default setting is 0 second.

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:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter VSAN view.

vsan vsan-id N/A

3. Configure the minimum

LSR receiving interval.

fspf min-ls-arrival value The default setting is 1 second.

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:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter VSAN view.

vsan vsan-id N/A

3. Configure the minimum

LSR refresh interval.

fspf min-ls-interval value The default setting is 5 seconds.