enable bgp neighbor remove-private-AS-numbers

enable bgp neighbor [remoteaddr | all] remove-private-AS-numbers


Enables the removal of private AS numbers from the AS path in route updates sent to EBGP peers.

Syntax Description

remoteaddr Specifies the IPv4 or IPv6 address of a BGP neighbor.
all Specifies all IPv4 and IPv6 neighbors.



Usage Guidelines

Private AS numbers are AS numbers in the range 64512 through 65534. You can remove private AS numbers from the AS path attribute in updates that are sent to external BGP (EBGP) neighbors. Possible reasons for using private AS numbers include:
  • The remote AS does not have officially allocated AS numbers.

  • You want to conserve AS numbers if you are multi-homed to the local AS.

Private AS numbers should not be advertised on the Internet. Private AS numbers can only be used locally within an administrative domain. Therefore, when routes are advertised out to the Internet, the routes can be stripped out from the AS paths of the advertised routes using this feature.

This command applies to the current VR or VRF context.


The following command enables the removal of private AS numbers from the AS path in route updates sent to the EBGP peers:

enable bgp neighbor remove-private-AS-numbers


This command was first available in ExtremeXOS 10.1.

This command required a specific license in ExtremeXOS 11.1.

Support for IPv6 was added in ExtremeXOS 12.6 BGP.

Platform Availability

This command is available on platforms that support the appropriate license. For complete information about software licensing, including how to obtain and upgrade your license and which licenses support the BGP feature, see the ExtremeXOS and Switch Engine 31.7 Feature License Requirements document.