Concept Guide

accumulated. When the accumulated penalty exceeds the congured suppress threshold (2400), the interface state is set to Error-Disabled
state. After the ap (ap 3), the interface ap stops. Then, the accumulated penalty decays exponentially and when it reaches below the
set reuse threshold (300), the interface is unsuppressed and the interface state changes to “up” state.
Enabling Link Dampening
To enable link dampening, use the following command.
• Enable link dampening.
INTERFACE mode
dampening
Examples of the show interfaces dampening Commands
To view the link dampening conguration on an interface, use the show config command.
R1(conf-if-gi-1/1)#show config
!
interface GigabitEthernet 1/1
ip address 10.10.19.1/24
dampening 1 2 3 4
no shutdown
To view dampening information on all or specic dampened interfaces, use the show interfaces dampening command from EXEC
Privilege mode.
DellEMC#show interfaces dampening
Interface Supp Flaps Penalty Half-Life Reuse Suppress Max-Sup
State
Gi 1/2 Up 0 0 1 2 3 4
Gi 1/2 Up 0 0 1 2 3 4
Gi 1/3 Up 0 0 1 2 3 4
DellEMC#
To view a dampening summary for the entire system, use the show interfaces dampening summary command from EXEC
Privilege mode.
DellEMC# show interfaces dampening summary
20 interfaces are configured with dampening. 3 interfaces are currently suppressed.
Following interfaces are currently suppressed:
Gi 1/2
Gi 3/1
Gi 4/2
DellEMC#
Clearing Dampening Counters
To clear dampening counters and accumulated penalties, use the following command.
• Clear dampening counters.
clear dampening
Example of the clear dampening Command
DellEMC# clear dampening interface Gi 1/1
DellEMC#show interfaces dampening Gigabitethernet 1/1
Interface Supp Flaps Penalty Half-Life Reuse Suppress Max-Sup
State
Gi 1/1 Up 0 0 1 2 3 4
DellEMC#
Interfaces
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