damping (Policy Options)
Syntax
damping name {
disable;
half-life minutes;
max-suppress minutes;
reuse number;
suppress number;
}
Hierarchy Level
[edit logical-systems logical-system-name policy-options], [edit policy-options]
Description
Define route flap damping properties to set on BGP routes.
Options
disable—Disable damping on
a per-prefix basis. Any damping state that is present in the routing
table for a prefix is deleted if damping is disabled.
half-life minutes—Decay
half-life. minutes is the interval
after which the accumulated figure-of-merit value is reduced by half
if the route remains stable.
Range: 1 through 45
Default: 15 minutes
For the half-life, configure a value that is less than the max-suppress. If you do not, the configuration is rejected.
max-suppress minutes—Maximum
hold-down time. minutes is the maximum
time that a route can be suppressed no matter how unstable it has
been.
Range: 1 through 720
Default: 60 minutes
For the max-suppress, configure a value that is greater than the half-life. If you do not, the configuration is rejected.
name—Name that identifies
the set of damping parameters. The name can contain letters, numbers,
and hyphens (-) and can be up to 255 characters long. To include
spaces in the name, enclose it in quotation marks (“ ”).
reuse number—Reuse threshold. number is the figure-of-merit value below
which a suppressed route can be used again.
Range: 1 through 20,000
Default: 750 (unitless)
suppress number—Cutoff
(suppression) threshold. number is
the figure-of-merit value above which a route is suppressed for use
or inclusion in advertisements.
Range: 1 through 20,000
Default: 3000 (unitless)
Required Privilege Level
routing—To view this statement in the configuration.
routing-control—To add this statement to the configuration.
Release Information
Statement introduced before Junos OS Release 7.4.