Users Guide

Parameters
half-life Enter the number of seconds after which the penalty is decreased. The penalty decreases
half after the half-life period expires. The range is from 1 to 30 seconds. The default is 5
seconds.
reuse-threshold Enter a number as the reuse threshold, the penalty value below which the interface state
is changed to “up”. The range is from 1 to 20000. The default is 750.
suppress-threshold Enter a number as the suppress threshold, the penalty value above which the interface
state is changed to “error disabled”. The range is from 1 to 20000. The default is 2500.
max-suppress-time Enter the maximum number for which a route can be suppressed. The default is four
times the half-life value. The range is from 1 to 86400. The default is 20 seconds.
Defaults Disabled.
Command Modes INTERFACE (conf-if-)
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the M I/O Aggregator.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information With each ap, the Dell Networking OS penalizes the interface by assigning a penalty (1024) that decays
exponentially depending on the congured half-life. After the accumulated penalty exceeds the suppress threshold
value, the interface moves 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. After the
penalty decays below the reuse threshold, the interface enables. The congured parameters are as follows:
• suppress-threshold should be greater than reuse-threshold
• max-suppress-time should be at least 4 times half-life
NOTE: You cannot apply dampening on an interface that is monitoring trac for other interfaces.
Example
Dell(conf-if-te-3/2)#dampening 20 800 4500 120
Dell(conf-if-te-3/2)#
Related Commands
clear dampening — clears the dampening counters on all the interfaces or just the specied interface.
show interfaces dampening — displays interface dampening information.
description
Assign a descriptive text string to the interface.
Syntax
description desc_text
To delete a description, enter no description command.
Parameters
desc_text Enter a text string up to 240 characters long.
536 Interfaces