xStack® DGS-3620 Series Layer 3 Managed Stackable Gigabit Switch CLI Reference Guide
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config bgp confederation identifier
Description
This command is used to configure the BGP confederation. A confederation, which is represented
by an AS, is a group of the sub AS.
A confederation can be used to reduce the internal BGP (iBGP) mesh by dividing a large single AS
into multihop sub AS. External peers interact with the confederation as if it is a single AS.
Each sub AS is fully meshed within itself and it has connections to other sub AS within the
confederation. The next hop, Multi Exit Discriminator (MED), and local preference information is
preserved throughout the confederation, allowing you to retain a single Interior Gateway Protocol
(IGP) for all the autonomous systems.
Format
config bgp confederation identifier <as_number 0-65535>
Parameters
<as_number 0-65535>
- Autonomous System numbers which we use to specify a BGP
confederation. If it is set to zero, the BGP confederation number is deleted. By default, this
setting is zero. This value must be between 0 and 65535.
Restrictions
Only Administrator, Operator and Power-User level users can issue this command. (EI Mode Only
Command)
Example
To create a confederation, AS number is 20:
DGS-3620-28SC:admin# config bgp confederation identifier 20
Command: config bgp confederation identifier 20
Success.
DGS-3620-28SC:admin#
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config bgp confederation peers
Description
The command is used to configure multiple adjacent Autonomous Systems in a confederation. The
Autonomous Systems specified in this command are visible internally to the confederation. Each
Autonomous System is fully meshed within itself or configures route reflector.
Format
config bgp confederation peers [add | delete] <aspath_list>
