Command Line Reference Guide

546 | Interfaces
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Command
History
Example FTOS(conf-if-gi-3/2)#dampening 20 800 4500 120
FTOS(conf-if-gi-3/2)#
Usage
Information
With each flap, FTOS penalizes the interface by assigning a penalty (1024) that decays exponentially
depending on the configured half-life. Once the accumulated penalty exceeds the suppress threshold
value, the interface is moved to the error-disabled state. This interface state is deemed as “down” by all
static/dynamic Layer 2 and Layer 3 protocols. The penalty is exponentially decayed based on the
half-life timer. Once the penalty decays below the reuse threshold, the interface is enabled. The
configured parameters should follow:
• suppress-threshold should be greater than reuse-threshold
• max-suppress-time should be at least 4 times half-life
Related
Commands
description
c e s
Assign a descriptive text string to the interface.
Syntax
description desc_text
To delete a description, enter no description.
Parameters
Defaults
No description is defined.
Command Modes
INTERFACE
Command
History
Usage
Information
• Spaces between characters are not preserved after entering this command unless you enclose the
entire description in quotation marks (“desc_text”).
• Entering a text string after the description command overwrites any previous text string configured
as the description.
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
Version 7.4.1.0 Introduced on E-Series
Note: Dampening cannot be applied on an interface that is monitoring traffic for other interfaces.
clear dampening Clear the dampening counters on all the interfaces or just the specified
interface.
show interfaces dampening
Display interface dampening information.
desc_text
Enter a text string up to 240 characters long.
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
Version 7.4.1.0 Modified for E-Series: Revised from 78 to 240 characters.