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BGP and BGP4+ Commands
Software Reference Supplement for SwitchBlade® x8112, x908, x900 and x610 Series Switches
C613-50032-01 REV D AlliedWare Plus
TM
Operating System - Software Version 5.4.3-2.6 3.155
neighbor remove-private-AS (BGP)
Use this command to remove the private Autonomous System (AS) number from external
outbound updates. Use the no variant of this command to revert to the default (disabled).
Syntax neighbor <neighborid> remove-private-AS
no neighbor <neighborid> remove-private-AS
Default
This command is disabled by default.
Mode BGP Router Configuration or BGP Router Address Family Configuration for a VRF instance
Usage The private AS numbers range from <64512-65535>. Private AS numbers are not
advertised to the Internet. This command is used with external BGP peers only. The router
removes the AS numbers only if the update includes private AS numbers. If the update
includes both private and public AS numbers, the system treats it as an error.
This command removes private AS numbers for BGP in Router Configuration mode. This
command is not supported for BGP4+ in IPv6 Address Family Configuration mode. This
command removes a private AS number and makes an update packet with a public AS
number as the AS path attribute. So only public AS numbers are entered in Internet BGP
routing tables, and private AS numbers are not entered in Internet BGP tables.
For the filtering to apply, both peering devices must be set to use either 2-byte or
extended 4- byte ASN (with the same ASN type set on both peers). For example, if a device
(which defaults to use a 4-byte ASN), is peered with a device that defaults to a 2-byte ASN,
then the device using a 2-byte ASN device also needs to be configured with the command
bgp extended-asn-cap for the filtering to apply.
See the How to remove private AS numbers for BGP section in the BGP and BGP4+
Introduction chapter for further information about removing private AS numbers.
Examples
Parameter Description
<neighborid>{<ip-address>|<tag>}
<ip-address> The address of an IPv4 BGP neighbor, in dotted
decimal notation A.B.C.D.
<tag> Name of an existing peer-group. For
information on how to create peer groups, refer
to the neighbor peer-group (add a neighbor)
(BGP and BGP+) command on page 3.144, and
neighbor remote-as (BGP and BGP4+)
command on page 3.152. When this parameter
is used with a command, the command applies
on all peers in the specified group.
awplus#
configure terminal
awplus(config)#
router bgp 10
awplus(config-router)#
neighbor 10.10.0.63 remove-private-AS