Reference Guide

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-specific. 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
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
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 flap, the system penalizes the interface by assigning a penalty (1024) that
decays exponentially depending on the configured 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 configured 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 traffic
for other interfaces.
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Interfaces