Zte ZXR10 GER, Руководство пользователя

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Chapter 16 BGP Configuration
Confidential and Proprietary Information of ZTE CORPORATION 251
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.
„
Router Command Line Interface has been accessed.
„
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.
T
A B L E
2 9 9 B
G P
D
A M P E N I N G
C
O M M A N D
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