Users Guide

Version Description
9.12(1.0) Introduced on the S5048F–ON.
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.8(2.0) Introduced on the S3100 series.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000–ON.
9.2(1.0) Introduced on the Z9500.
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 identified routers. You cannot mix them.
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.
After specifying autonomous systems numbers for the BGP confederation, recycle the peers to update
their configuration.
Related
Commands
● bgp confederation identifier — configure a confederation ID.
● bgp four-octet-as-support — enable 4-byte support for the BGP process.
bgp dampening
Enable BGP route dampening and configure the dampening parameters.
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 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 from 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 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.
350 Border Gateway Protocol