Users Guide

Version Description
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.8.1.0 Introduced on the S-Series.
7.7.1.0 Introduced on the C-Series. Added support for the 4-byte format.
Usage Information
All the routers in the Confederation must be 4 byte or 2 byte identied routers. You cannot mix them.
The autonomous systems congured in this command are visible to the EBGP neighbors. Each autonomous
system is fully meshed and contains a few connections to other autonomous systems.
After specifying autonomous systems numbers for the BGP confederation, recycle the peers to update their
conguration.
Related Commands
bgp confederation identier — congures a confederation ID.
bgp four-octet-as-support — enables 4-byte support for the BGP process.
bgp dampening
Enable BGP route dampening and congure the dampening parameters.
S4820T
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 from 1 to 45. The default is 15
minutes.
reuse (OPTIONAL) Enter a number as the reuse value, which is compared to the apping
route’s Penalty value. If the Penalty value is less than the reuse value, the apping
route is once again advertised (or no longer suppressed). The range is from 1 to
20000. The default is 750.
suppress (OPTIONAL) Enter a number as the suppress value, which is compared to the
apping route’s Penalty value. If the Penalty value is greater than the suppress
value, the apping route is no longer advertised (that is, it is suppressed). The
range is from 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 from 1 to 255. The default
is 60 minutes.
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Border Gateway Protocol