R0106-HP MSR Router Series Layer 3 - IP Routing Command Reference(V7)

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The minimum interval and the incremental interval cannot be greater than the maximum interval.
Examples
# Configure the maximum, minimum, and incremental SPF calculation interval as 10 seconds, 100
milliseconds, and 300 milliseconds, respectively.
<Sysname> system-view
[Sysname] isis 1
[Sysname-isis-1] address-family ipv6
[Sysname-isis-1-ipv6] timer spf 10 100 300