bgp dampening
Enable BGP route dampening and configure the dampening parameters.
C-Series, E-Series, S-Series, Z-Series
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 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 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 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
1 to 255. The default is 60 minutes.
route-map
map-
name
(OPTIONAL) Enter the keyword route-map followed by 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
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 7.8.1.0 Introduced on the S-Series.
Version 7.7.1.0 Introduced on the C-Series.
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, you must configure the parameters in
the order they appear in the CLI.
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