Service Manual

bgp four-octet-as-support — enables 4-byte support for the BGP process.
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
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.
Border Gateway Protocol IPv4 (BGPv4) 285