Administrator Guide

• neighbor route-reflector-client – configures a route reflector and clients.
• show ip bgp cluster-list – views paths with a cluster ID.
bgp confederation identifier
Configure an identifier for a BGP confederation.
C9000 Series
Syntax
bgp confederation identifier as-number
To delete a BGP confederation identifier, use the no bgp confederation identifier as-number
command.
Parameters
as-number Enter the AS number. The range is 1 to 65535.
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.
Border Gateway Protocol 427