Set Dampening - Cisco Nexus 3548 Command Reference Manual

Chapter Unicast Routing Commands

set dampening

To set the Border Gateway Protocol (BGP) route dampening factors, use the set dampening command.
To disable this function, use the no form of this command.
Syntax Description
half-life
reuse
suppress
max-suppress-time
Command Default Disabled
Command Modes Route-map configuration mode
Command History Release
5.0(3)A1(1)
Usage Guidelines Use the route-map global configuration command and the match and set route-map configuration
commands to define the conditions for redistributing routes from one routing protocol into another. Each
route-map command has a list of match and set commands associated with it. The match commands
specify the match criteria—the conditions under which redistribution is allowed for the current
route-map command. The set commands specify the set actions—the particular redistribution actions
to perform if the criteria enforced by the match commands are met. The no route-map command deletes
the route map.
When a BGP peer is reset, the route is withdrawn and the flap statistics cleared. In this instance, the
withdrawal does not incur a penalty even though route flap dampening is enabled.
This command requires the LAN Enterprise Services license.
OL-27852-01
set dampening half-life reuse suppress max-suppress-time
no set dampening
Time (in minutes) after which a penalty is decreased. Once the route has
been assigned a penalty, the penalty is decreased by half after the half life
period (which is 15 minutes by default). The process of reducing the penalty
occurs every 5 seconds. The range is from 1 to 45, and the default is 15.
Route that is unsuppressed if the penalty for a flapping route decreases
enough to fall below this value. The process of unsuppressing routes occurs
at 10-second increments. Range: 1 to 20000. Default: 750.
Route that is suppressed when its penalty exceeds this limit. The range is
from 1 to 20000, and the default is 2000.
Maximum time (in minutes) that a route can be suppressed. The range is
from 1 to 255, and the default is four times the half-life value. If the default
half-life value is used, the maximum suppress time defaults to 60 minutes.
Modification
This command was introduced.
Cisco Nexus 3548 Switch NX-OS Unicast Routing Command Reference
set dampening
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