Dell C9000 series, Справочное руководство

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Command History This guide is platform-specific. For command information about other platforms, refer
to the relevant Dell Networking OS Command Line Reference Guide .
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.5(0.1) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.12.0 Introduced on the S4810.
7.8.1.0 Added support for multi-topology ISIS.
7.5.1.0 Added support for SPF Throttling Enhancement.
Usage Information This command
spf-interval
in CONFIG-ROUTER-ISIS-AF-IPV6 mode is used for
IPv6 Multi-Topology route computation only. If using Single Topology mode, use the
spf-interval
command in CONFIG-ROUTER-ISIS mode for both IPv4 and IPv6
route computations.
SPF throttling slows down the frequency at which route calculations are performed
during network instability. Even though throttling route calculations slows down
network convergence, not throttling can result in a network not functioning as
expected. If network topology is unstable, throttling slows down the scheduling of
route calculations until the topology regains its stability.
The first route calculation is controlled by the initial wait interval and the second
calculation is controlled by the second wait interval. Each subsequent wait interval is
twice as long as the previous one until the wait interval reaches the maximum wait time
specified (
interval seconds
). After the network calms down and there are no
triggers for two times the maximum interval, fast behavior is restored (the initial wait
time).
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