Cisco ASR 9000 Series Command Reference Guide

dampening
To limit propagation of transient or frequently changing interface states on Interface Manager (IM) clients,
turn on event dampening by using the dampening command in interface configuration mode. To turn dampening
off, use the no form of this command.
dampening [half-life [reuse suppress max-suppress-time]]
no dampening [half-life [reuse suppress max-suppress-time]]
Syntax Description
(Optional) Time (in minutes) after which a penalty is decreased. Once the interface has
been assigned a penalty, the penalty is decreased by half after the half-life period. The
process of reducing the penalty happens every 5 seconds. The range of the half-life
period is 1 to 45 minutes. The default is 1 minute.
half-life
(Optional) Penalty value below which a stable interface is unsuppressed. Range is from
1 through 20000. Default value is 750.
reuse
(Optional) Limit at which an interface is suppressed when its penalty exceeds that limit.
Range is from 1 through 20000, and must be greater than the reuse threshold. The
default value is 2000.
suppress
(Optional) Maximum time (in minutes) that an interface can be suppressed. This value
effectively acts as a ceiling that the penalty value cannot exceed. Default value is four
times the half-life period.
max-suppress-time
Command Default
Dampening is turned off by default. When you use the dampening command, the following default values
are enabled for any optional parameters that you do not enter:
•
half-life: 1 minute
•
reuse: 750
•
suppress: 2000
•
max-suppress-time: Four times the half-life
Command Modes
Interface configuration
Command History
ModificationRelease
This command was introduced.Release 3.7.2
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Release 5.3.x
499
Global Interface Commandsonthe Cisco ASR 9000 Series Router
dampening

Cisco ASR 9000 Series Specifications

General

Series	ASR 9000
Category	Network Router
Modular Design	Yes
Redundancy	Yes (Hardware and Software)
Operating System	Cisco IOS XR
Interfaces/Ports	10G, 40G, 100G, 400G Ethernet
Expansion Slots	Varies by model
Routing Protocol	BGP, OSPF, IS-IS, EIGRP
Management	CLI, SNMP, NETCONF
Power Supply	Redundant
Port Density	Varies by model
Power Supply Options	AC, DC
Memory	Varies by model
Storage	Varies by model
Dimensions	Varies by model
Weight	Varies by model