dampening

Sets dampening parameters for the route in BGP address-family mode.
Syntax
dampening { half-life reuse suppress max-suppress-time | route-map route-map }
no dampening
Parameters
half-life
Number of minutes after which the route penalty becomes half its value. Range is from 1 through 45. Default is 15.
reuse
Minimum penalty below which the route becomes usable again. Range is from 1 through 20000. Default is 750.
suppress
Maximum penalty above which the route is suppressed by the device. Range is from 1 through 20000. Default is 2000.
max-suppress-time
Maximum number of minutes a route can be suppressed by the device. Default is 40.
route-map
Enables selection of dampening values established in a route map by means of the route-map command.
route-map
Name of the configured route map.
Modes

BGP configuration mode

BGP address-family IPv6 unicast configuration mode

Usage Guidelines

Use the no form of this command to disable dampening.

Use dampening without operands to set default values for all dampening parameters.

When this command is entered in BGP global configuration mode, it applies only to the IPv4 address family. Use this command in BGP address-family IPv6 unicast configuration mode for BGP4+ configurations.

To use the dampening values established in a route map, configure the route map first, and then enter the route-map command, followed by the name of the configured route map.

A full range of dampening values (half-life, reuse, suppress, max-suppress-time) can also be set by means of the set as-path prepend command.

Examples

This example enables default dampening as an IPv4 address-family function. 

device# configure terminal
device(config)# router bgp
device(config-bgp-router)# dampening

This example changes all the dampening values as an IPv6 address-family function. 

device# configure terminal
device(config)# router bgp
device(config-bgp-router)# address-family ipv6 unicast
device(config-bgp-ipv6u)# dampening 20 200 2500 40

This example applies the dampening half-life established in a route map, configures the route map using the set dampening command. 

device# configure terminal
device(config)# route-map myroutemap permit 1
device(config-route-map myroutemap)# set dampening 20
Parent topic: Commands D through H