Administrator Guide

Enabling Link Dampening
To enable link dampening, use the following command.
● Enable link dampening.
INTERFACE mode
dampening
R1(conf-if-te-1/1)#show config
!
interface TengigabitEthernet 1/1
ip address 10.10.19.1/24
dampening 1 2 3 4
no shutdown
R1(conf-if-te-1/1)#exit
To view the link dampening configuration on an interface, use the show config command.
To view dampening information on all or specific dampened interfaces, use the show interfaces dampening command
from EXEC Privilege mode.
Dell# show interfaces dampening
Interface State Flaps Penalty Half-Life Reuse Suppress Max-Sup
Te 0/0 Up 0 0 57 502 500 20
Te 0/1 Up 2 1 200 20500 1500 300
Te 0/2 Down 4 8 50 30600 2000 120
To view link dampening on a port extender interface.
Dell(conf-if-range-pegi-255/1/36-37)#do show interface
Interface Supp Flaps Penalty Half-Life Reuse Suppress Max-Sup
State
PeGi 255/1/36 Up 0 0 20 200 800 100
PeGi 255/1/37 Up 0 0 20 200 800 100
To view a dampening summary for the entire system, use the show interfaces dampening summary command from
EXEC Privilege mode.
Dell# show interfaces dampening summary
20 interfaces are configured with dampening. 3 interfaces are currently suppressed.
Following interfaces are currently suppressed:
Te 0/2
Te 3/1
Te 4/2
Dell#
Clearing Dampening Counters
To clear dampening counters and accumulated penalties, use the following command.
● Clear dampening counters.
clear dampening
Dell# clear dampening interface Te 0/1
Dell# show interfaces dampening TengigabitEthernet0/0
Interface State Flaps Penalty Half-Life Reuse Suppress Max-Sup
Te 0/1 Up 0 0 20 500 1500 300
Interfaces
443