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JunosE 11.3.x Command Reference Guide A to M
bgp dampening
Syntax
Release Information
Description
Options
Mode
282
[ no ] bgp dampening [ halfLife [ reuse suppress maxSuppressTime
[ halfLifeUnreachable ] ] ] [ route-map mapTag ]
Command introduced before JunosE Release 7.1.0.
Enables BGP route dampening. The router assesses a penalty of 1000 each time a route
flaps and adds this to any previously accumulated penalty value. Penalties are cumulative.
The no version disables route flap dampening.
halfLife—Half-life period in minutes in the range 1–45; default value is 15. When a BGP
route has been assigned a penalty, the penalty is decreased by half after the half-life
period.
reuse—Reuse limit in the range 1–20000; default value is 750. As the penalty for a
flapping route decreases and falls below this reuse limit, the route is unsuppressed.
That is, the route is added back to the BGP table and used for forwarding.
suppress—Suppress limit in the range 1–20000; default value is 2000. A route is
suppressed when its penalty exceeds this limit.
maxSuppressTime—Maximum suppression time in minutes in the range 1–255. This
value is the maximum amount of time a route can be suppressed. The default value
is four times the half-life value.
halfLifeUnreachable—Alternate half-life period in minutes for unreachable routes; a
number in the range 1–45. If this value is not specified, the same half-life period is used
for both reachable and unreachable routes.
route-map—Specifies that dampening can be applied to routes according to the route
map behavior. If the route map permits a route, the route is subject to dampening. If
the route map denies a route, the route is not subject to dampening. The route map
can contain a no dampening clause that determines dampening characteristics.
mapTag—Name of the route map; a string of up to 32 alphanumeric characters.
Address Family Configuration, Router Configuration
Copyright © 2010, Juniper Networks, Inc.
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