Service Manual

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-)
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.8(0.0) Introduced on the S3048-ON and S4048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.3.11.1 Introduced on the Z9000.
8.1.1.0 Introduced on the E-Series ExaScale.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
7.4.1.0 Introduced on the E-Series.
Usage Information With each ap, 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-gi-1/10)#dampening 20 800 4500 120
Dell(conf-if-gi-1/10)#
602
Interfaces