Reference Guide

Border Gateway Protocol | 289
Command
History
bgp confederation identifier
c e s z
Configure an identifier for a BGP confederation.
Syntax
bgp confederation identifier as-number
To delete a BGP confederation identifier, use the no bgp confederation identifier as-number
command.
Parameters
Defaults
Not configured.
Command Modes
ROUTER BGP
Usage
Information
You must configure your system to accept 4-Byte formats before entering a 4-Byte AS Number. All the
routers in the Confederation must be 4 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. The
next hop, MED, and local preference information is preserved throughout the confederation.
FTOS accepts confederation EBGP peers without a LOCAL_PREF attribute. The software sends
AS_CONFED_SET and accepts AS_CONFED_SET and AS_CONF_SEQ.
Related
Commands
Command
History
bgp confederation peers
c e s z
Specify the Autonomous Systems (ASs) that belong to the BGP confederation.
Syntax
bgp confederation peers as-number [...as-number]
To return to the default, enter no bgp confederation peers.
Version 8.3.11.1 Introduced on the Z9000.
Version 7.8.1.0 Introduced support on S-Series
Version 7.7.1.0 Introduced support on C-Series
as-number
Enter the AS number.
Range: 0-65535 (2-Byte)
or
1-4294967295 (4-Byte)
or
0.1-65535.65535 (Dotted format)
bgp four-octet-as-support Enable 4-Byte support for the BGP process.
Version 8.3.11.1 Introduced on the Z9000.
Version 7.8.1.0 Introduced support on S-Series
Version 7.7.1.0 Introduced support on C-Series
Added support for 4-Byte format