spf-interval

Changes the shortest path first (SPF) interval.

Syntax

spf-interval { level-1 | level-2 } max-wait initial-wait second-wait

no spf-interval

Parameters

level-1: Specifies Level 1 packets only.
level-2: Specifies Level 2 packets only.
max-wait: Specifies the maximum interval between SPF recalculations in seconds. The range is from 0 through 120 seconds. The default is 5 seconds.
initial-wait: Specifies the initial SPF calculation delay in milliseconds after an LSP change. The range is from 0 through 120000 milliseconds. The default is 5000 milliseconds (5 seconds).
second-wait: Indicates the hold time between the first and second SPF calculations in milliseconds. The range is from 1 through 120000 milliseconds. The default is 5000 milliseconds (5 seconds).

Modes

IS-IS router configuration mode

Usage Guidelines

IS-IS is supported on the Extreme 8820, SLX 9740, SLX 9640, and SLX 9540 devices only.

The no form of the command restores the defaults.

Examples

The following example specifies that the maximum interval in seconds between SPF recalculations is 15 seconds for Level 1 packets. The initial SPF calculation delay is 10000 milliseconds, and the hold time between the first and second SPF calculations is 15000 milliseconds.

device# configure terminal
device(config)# router isis
device(config-isis-router)# spf-interval level-1 15 10000 15000

The following example restores the defaults.

device# configure terminal
device(config)# router isis
device(config-isis-router)# no spf-interval