CLI Guide

Layer 3 Routing Commands 1830
Syntax
timers throttle spf spf-start spf-hold spf-maximum
no timers throttle spf
• spf-start—Configures the delay used when no SPF calculation has been
scheduled during the current wait interval. (Range: 1–60000 milliseconds)
• spf-hold—Configures the initial wait interval. (Range: 1–60000
milliseconds)
• spf-maximum—Configures the maximum wait interval. (Range: 1–60000
milliseconds)
Default Configuration
The default value for spf-start is 2000 milliseconds.
The default value for spf-hold is 5000 milliseconds.
The default value for spf-maximum is 5000 milliseconds.
Command Mode
OSPFv3 Configuration mode.
User Guidelines
The timers throttle command throttles the generation of link-state packets
(LSPs). Receipt of an LSP will initiate an SPF calculation in the router. LSP
throttling reduces route flapping and the load on other OSPF routers in the
network.
The initial wait interval is set to the value of spf-hold. If an SPF calculation is
not initiated during the current wait interval, the next SPF calculation is
scheduled spf-start milliseconds later. This wait interval is doubled on each
subsequent expiry if an SPF calculation is initiated during the interval.
Initiating an SPF calculation resets the wait interval to the value of spf-hold.
The wait interval is not allowed to exceed the value of spf-maximum.
Command History
Command introduced in version 6.5 firmware.