Reference Guide

Border Gateway Protocol IPv4 (BGPv4) | 325
bgp dampening
c e s
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
Defaults
Disabled.
Command Modes
ROUTER-BGP-ADDRESS FAMILY
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-dependent, therefore, if you configure one
parameter, you must configure the parameters in the order they appear in the CLI.
Related
Commands
Command
History
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.
Range: 1 to 45.
Default: 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).
Range: 1 to 20000.
Default: 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).
Range: 1 to 20000.
Default: 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.
Range: 1 to 255.
Default: 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.
show ip bgp dampened-paths View the BGP paths
Version 7.8.1.0 Introduced support on S-Series
Version 7.7.1.0 Introduced support on C-Series