Reference Guide

Interfaces | 605
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”).
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.