Reference Guide

304 | Border Gateway Protocol IPv4 (BGPv4)
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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
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.
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 8.3.7.0 Introduced on the S4810.
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