Dell C9010 Modular Chassis Switch EMC Networking Command-Line Reference Guide - Page 444

Usage Information Version 8.2.1.0 7.4.1.0 Description Introduced on the E-Series ExaScale. Introduced The autonomous systems configured in this command are visible to the EBGP neighbors. Each autonomous system is fully meshed and contains a few connections to other autonomous systems. The next hop, MED, and local preference information is preserved throughout the confederation. The system accepts confederation EBGP peers without a LOCAL_PREF attribute. The software sends AS_CONFED_SET and accepts AS_CONFED_SET and AS_CONF_SEQ. bgp dampening Enable BGP route dampening and configure the dampening parameters. C9000 Series Syntax Parameters bgp dampening [half-life reuse suppress max-suppress-time] [route-map mapname] To disable route dampening, use the no bgp dampening [half-life reuse suppress maxsuppress-time] [route-map map-name] command. half-life reuse suppress max-suppresstime route-map mapname (OPTIONAL) Enter the number of minutes after which the Penalty is decreased. After the router assigns a Penalty of 1024 to a route, the Penalty is decreased by half after the half-life period expires. The range is 1 to 45. The default is 15 minutes. (OPTIONAL) Enter a number as the reuse value, which is compared to the flapping route's Penalty value. If the Penalty value is less than the reuse value, the flapping route is once again advertised (or no longer suppressed). The range is 1 to 20000. The default is 750. (OPTIONAL) Enter a number as the suppress value, which is compared to the flapping route's Penalty value. If the Penalty value is greater than the suppress value, the flapping route is no longer advertised (that is, it is suppressed). The range is 1 to 20000. The default is 2000. (OPTIONAL) Enter the maximum number of minutes a route can be suppressed. The default is four times the half-life value. The range is 1 to 255. The default is 60 minutes. (OPTIONAL) Enter the keywords route-map followed by the name of a configured route map. Only match commands in the configured route map are supported. Defaults Disabled. Command Modes ROUTER BGPV6-ADDRESS FAMILY Command History Version 9.9(0.0) Description Introduced on the C9010. 9.2(1.0) Introduced on the Z9500. 8.2.1.0 Introduced on the E-Series ExaScale. 7.4.1.0 Introduced Usage Information If you enter bgp dampening, the default values for half-life, reuse, suppress, and maxsuppress-time are applied. The parameters are position-dependent; therefore, if you configure one parameter, you must configure the parameters in the order they appear in the command. 444 Border Gateway Protocol