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566
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Interfaces
half-life
reuse
-
threshold
suppress-threshold
max-suppress-time
Disabled
INTERFACE (conf-if-)
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
FTOS(conf-if-gi-3/2)#dampening 20 800 4500 120
FTOS(conf-if-gi-3/2)#
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
Note:
Dampening cannot be applied on an interface that is monitoring traffic for other
.
interfaces
clear dampening
show interfaces dampening
Enter the number of seconds after which the penalty is decreased. The
penalty is decreased by half after the half-life period expires.
Range: 1 to 30 seconds
Default: 5 seconds
Enter a number as the reuse threshold, the penalty value below which the
interface state is changed to "up".
Range: 1 to 20000
Default: 750
Enter a number as the suppress threshold, the penalty value above which the
interface state is changed to "error disabled".
Range: 1 to 20000
Default: 2500
Enter the maximum number for which a route can be suppressed. The default
is four times the half-life value.
Range: 1 to 86400
Default: 20 seconds
Clear the dampening counters on all the interfaces or just the specified
interface.
Display
interface dampening information.
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