Chapter 16 BGP Configuration
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BGP Route Dampening
Every time when a route flaps, a penalty of 1000 will be
assigned. When the penalty reaches a suppress-limit, the
advertisement of the route will be suppressed. For each half-life-
time, the penalty will decrease geometrically. When the penalty
reduces to the reuse-limit, the route advertisement dampening
will be cancelled.
Refer to below procedure for BGP route dampening configuration
on ZTE ZXR10 GER.
îš„ Router Command Line Interface has been accessed.
îš„ BGP is running on a network.
1. To reduce instability caused by route flapping, use bgp
dampening [<half-life> <reuse> <suppress> <max-
suppress-time>|route-map <map-tag>] command in BGP
route mode as shown in
Table 299.
TABLE 299 BGP DAMPENING COMMAND
Result: This reduces instability caused by route flapping.
Half-life-time: Ranging from 1 to 45min (default: 15min)
f Reuse-value: Ranging from 1 to 20000 (default: 750)
f Suppress-value: Ranging from 1 to 20000 (default: 2000)
f Max-suppress-time: Ranging from 1 to 255 (default: four
times the half-life-time)
Enable dampening in routers:
ZXR10(config)#router bgp 100
ZXR10(config-router)#bgp dampening
ZXR10(config-router)#network 203.250.15.0 255.255.255.0
ZXR10(config-router)#neighbor 192.208.10.5 remote-as 300
Introduction
Purpose
Prerequisites
Steps
Command
Format
Command
Mode
Command Function
bgp dampening
[<half-life>
<reuse>
<suppress>
<max-suppress-
time>|route-map
<map-tag>]
Route
This reduces instability
caused by route flapping
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