The suppress-flapping route-calculate command configures a period for the device to delay route calculation when the device receives an LSP during route flapping.
The suppress-flapping route-calculate disable command disables the delay function.
The undo suppress-flapping route-calculate command restores the default configuration.
By default, if the device receives an LSP during route flapping, it delays route calculation for 10s.
suppress-flapping route-calculate timer delay-interval [ threshold threshold-value ]
suppress-flapping route-calculate disable
undo suppress-flapping route-calculate
undo suppress-flapping route-calculate timer delay-interval [ threshold threshold-value ]
undo suppress-flapping route-calculate disable
| Parameter | Description | Value |
|---|---|---|
| delay-interval | Specifies a period for the device to delay route calculation when the device receives an LSP during route flapping. | The value is an integer ranging from 1 to 600, in seconds. |
| threshold threshold-value | Specifies a route flapping threshold. If a route flaps for the specified number of times, route calculation is delayed. | The value is an integer ranging from 3 to 100, in times. |
Usage Scenario
On an IS-IS network, if the device receives an LSP with a routing information change, the device needs to calculate routes based on the LSP. If routing information changes frequently and routes are calculated immediately, a lot of system resources will be consumed. To prevent this problem, run the suppress-flapping route-calculate command to configure a period for the device to delay route calculation when the device receives an LSP during route flapping.
Prerequisites
An IS-IS process has been created and the IS-IS view has been displayed using the isis command.