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DGS-3600 Series Layer 3 Gigabit Ethernet Managed Switch CLI Manual
136
config bgp confederation identifier
Syntax
config bgp confederation identifier <as_number 0-65535>
Description 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 ASs within the
confederation. The next hop, Multi Exit Discriminator (MED), and local preference information
is preserved throughout the confederation, allowing users to retain a single Interior Gateway
Protocol (IGP) for all the autonomous systems.
Parameters
<as_number> - 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.
Restrictions Only Administrator and Operator-level users can issue this command.
Example usage:
To create a confederation in which the AS number is 20:
DGS-3627:admin# config bgp confederation identifier 20
Command: config bgp confederation identifier 20
Success.
DGS-3627:admin#
config bgp confederation peers
Purpose This command is used to add or delete BGP confederation peers.
Syntax
config bgp confederation peers [add | delete] <aspath_list>
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.
Parameters
<aspath_list> - Can be one or multiple AS number partitions, each separated by a comma.
AS number: 1-65535, Autonomous System numbers for BGP peers that will belong to the
confederation.
Restrictions Only Administrator and Operator-level users can issue this command.
Example usage:
To add two confederation peers in which the AS numbers are 50000 and 50001:
DGS-3627:admin# config bgp confederation peers add 50000, 50001
Command: config bgp confederation peers add 50000, 50001
Success.
DGS-3627:admin#