Administrator Guide

ManualsBrandsDell ManualsAccess PlatformsC9010 Modular Chassis Switch

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Defaults Not configured.

Command Modes ROUTER BGP

Command History

Version Description

9.9(0.0) 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

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

bgp dampening [half-life reuse suppress max-suppress-time] [route-map map-name]

To disable route dampening, use the no bgp dampening [half-life reuse suppress max-

suppress-time] [route-map map-name] command.

Parameters

half-life

(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.

reuse

(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.

suppress

(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.

max-suppress-

time

(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.

route-map

map-

name

(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