Dell Force10 S25N-S50N FTOS Command Line Reference Guide FTOS 8.4.2.7 E-Series - Page 566

www.dell.com | support.dell.com Parameters half-life reuse-threshold suppress-threshold max-suppress-time 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 Defaults Disabled Command Modes INTERFACE (conf-if-) Command History Version 8.1.1.0 Version 7.6.1.0 Version 7.5.1.0 Version 7.4.1.0 Introduced on E-Series ExaScale Introduced on S-Series Introduced on C-Series Introduced on E-Series 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 Note: Dampening cannot be applied on an interface that is monitoring traffic for other interfaces. Related Commands clear dampening show interfaces dampening Clear the dampening counters on all the interfaces or just the specified interface. Display interface dampening information. 566 | Interfaces