Users Guide

bgp confederation identier
Congure an identier for a BGP confederation.
Syntax
bgp confederation identifier as-number
To delete a BGP confederation identier, use the no bgp confederation identifier as-number
command.
Parameters
as-number Enter the AS number. The range is from 0 to 65535 (2 byte), from 1 to
4294967295 (4 byte), or from 0.1 to 65535.65535 (dotted format).
Defaults Not congured.
Command Modes ROUTER BGP
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.7(0.0) Introduced on the S6000–ON.
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
To accept 4-byte formats before entering a 4-byte AS number, congure your system. 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. The next hop, MED,
and local preference information is preserved throughout the confederation.
Dell Networking OS accepts confederation EBGP peers without a LOCAL_PREF attribute. The software
sends AS_CONFED_SET and accepts AS_CONFED_SET and AS_CONF_SEQ.
If a local-as is congured, BGP does not allow for the conguration of BGP confederation. Similarly, if BGP
confederation is congured, then BGP does not allow the conguration of local-as.
If the neighbor is an eBGP neighbor, then BGP performs a check on the rst AS number. In this scenario, it
is mandatory that the rst sequence in the AS path is of type AS_SEQUENCE or AS_CONFED_SEQUENCE
(in the case of confederations). If the rst entry appears as an AS_CONFED_SET and the neighbor is not in
the local AS, then this is strictly a problem with the neighbor node.
This command automatically restarts the BGP instance for the conguration to take eect.
Border Gateway Protocol
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