The suppress-flapping lsp-generation command configures a period for the system to delay generation of the same LSP during route flapping.
The suppress-flapping lsp-generation disable command disables the delay function.
The undo suppress-flapping lsp-generation command restores the default configuration.
By default, the system delays generation of the same LSP for 10s during route flapping.
suppress-flapping lsp-generation timer delay-interval [ threshold threshold-value ]
suppress-flapping lsp-generation disable
undo suppress-flapping lsp-generation
undo suppress-flapping lsp-generation timer delay-interval [ threshold threshold-value ]
undo suppress-flapping lsp-generation disable
| Parameter | Description | Value |
|---|---|---|
| delay-interval | Specifies a period for the system to delay generation of the same 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, LSP generation is delayed. |
The value is an integer ranging from 3 to 100, in times. |
Usage Scenario
On an IS-IS network, when the local routing information changes, the device sends LSPs to advertise the change. If the local routing information changes frequently and new LSPs are generated immediately, a lot of system resources will be consumed. To prevent this problem, run the suppress-flapping lsp-generation command to configure a period for the device to delay generation of the same LSP during route flapping.
Prerequisites
An IS-IS process has been created and the IS-IS view has been displayed using the isis command.
Configuration Impact
If the device delays generation of the same LSP too long, the local routing information cannot be advertised to neighbors in time, slowing down route convergence.