Command Line Reference Guide

302 | Border Gateway Protocol IPv4 (BGPv4)
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bgp confederation identifier
c e s
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
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 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