BGP Configuration Commands
6-90 Configuring the Border Gateway Protocol

bgp dampening

ThiscommandenablesBGProutedampeningtominimizepropagationofflappingroutes
(repeatedlyavailable/unavailable)acrossthenetwork.Eachtimearouteflaps,apenaltyvalueof
1024isassignedtothatroute.
Syntax
bgp dampening [half-life | reuse | suppress | suppress-max][route-map route-map-
number]
Syntax of the “no” Form
ThenoformofthiscommanddisablesBGPdampening:
no bgp dampening
Mode
Routerconfiguration:XSR(config-router)#
Defaults
Halflife‐15minutes
Reuse‐750
Suppress‐2000
Suppressmax‐60minutes
•Disabled.
Example
Thefollowingexampleenablesrouteflapdampening:
XSR(config)#router bgp 100
XSR(config)#bgp dampening
half-life Intervalafterwhichtheroute’spenaltybecomeshalfitsvalue,ranging
from1to45minutes.
reuse Howlowaroute’spenaltymustbecomebeforetheroutebecomes
eligibleforuseagainafterbeingsuppressed,rangingfrom1to20000.
suppress Howhigharoute’spenaltymustbecomebeforetherouteissuppressed,
rangingfrom1to20000.
suppress-max Peakintervalaroutecanbesuppressedregardlessofhowunstableitis.
Range:1to255minutes.
route-map-number Routemapnumberappliedtodampenedroutes,rangingfrom1to199.