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Dell PowerEdge FN I/O Module Command Line Reference Guide 9.10(0.0)

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bgp dampening

Enable BGP route dampening and configure the dampening parameters.

Syntax

bgp dampening [ half-life reuse suppress max-suppress-time ] [route-map map-name]

To disable route dampening, use the no bgp dampening [ half-life reuse suppress max-suppress-time] [route-map map-name] command.

Parameters

half-life	(OPTIONAL) Enter the number of minutes after which the Penalty is decreased. After the router assigns a Penalty of 1024 to a route, the Penalty is decreased by half after the half-life period expires. The range is from 1 to 45. The default is 15 minutes.
reuse	(OPTIONAL) Enter a number as the reuse value, which is compared to the flapping route’s Penalty value. If the Penalty value is less than the reuse value, the flapping route is once again advertised (or no longer suppressed). The range is from 1 to 20000. The default is 750.
suppress	(OPTIONAL) Enter a number as the suppress value, which is compared to the flapping route’s Penalty value. If the Penalty value is greater than the suppress value, the flapping route is no longer advertised (that is, it is suppressed). The range is from 1 to 20000. The default is 2000.
max-suppress-time	(OPTIONAL) Enter the maximum number of minutes a route can be suppressed. The default is four times the half-life value. The range is from 1 to 255. The default is 60 minutes.
route-map map-name	(OPTIONAL) Enter the keyword `route-map` then the name of a configured route map. Only `match` commands in the configured route map are supported.

Defaults

Disabled.

Command Modes

ROUTER BGP
ROUTER BGP-address-family

Supported Modes

Full–Switch

Command History

Version	Description
9.9(0.0)	Introduced on the FN IOM.
9.2(0.0)	Introduced on the MXL 10/40GbE Switch IO Module.

Usage Information

If you enter the bgp dampening command, the default values for half-life, reuse, suppress, and max-suppress-time are applied. The parameters are position-dependent; therefore, if you configure one parameter, configure the parameters in the order they appear in the CLI.

Related Commands

show ip bgp dampened-paths — views the BGP paths.