Reference Guide

bgp dampening
Enable BGP route dampening and configure the dampening parameters.
C9000 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 keywords 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 BGPV6-ADDRESS FAMILY
Command History
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.2.1.0 Introduced on the E-Series ExaScale.
7.4.1.0 Introduced
Usage Information If you enter bgp dampening, the default values for half-life, reuse,
suppress, and max-suppress-time are applied. The parameters are position-
Border Gateway Protocol
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