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BGP and BGP4+ Commands
Software Reference Supplement for SwitchBlade® x8112, x908, x900 and x610 Series Switches
3.88 AlliedWare Plus
TM
Operating System - Software Version 5.4.3-2.6 C613-50032-01 REV D
neighbor allowas-in (BGP and BGP4+)
Use this command to accept an AS_PATH with the specified Autonomous System (AS)
number from inbound updates for both BGP and BGP4+ routes.
This command allows BGP and BGP4+ to accept prefixes with the same ASN in the
AS_PATH attribute. This command allows BGP and BGP4+ to accept up to 10 instances,
configured by the
<occurrences> placeholder, of its own AN in the AS_PATH for a prefix.
Use the no variant of this command to revert to default functionality (disabled by default).
Syntax [BGP/BGP4+] neighbor <neighborid> allowas-in <occurrences>
no neighbor <neighborid> allowas-in
Default [BGP/BGP4+]
Disabled
Mode [BGP] Router Configuration or IPv4 Address Family Configuration
Mode [BGP4+] IPv6 Address Family Configuration
Usage [BGP/BGP4+] Use this command to configure PE (Provider Edge) routers to allow re-advertisement of all
prefixes containing duplicate Autonomous System Numbers (ASNs). In a hub and spoke
configuration, a PE router re-advertises all prefixes containing duplicate ASNs. Specify the
remote-as or peer-group first using the related commands. The command allows a
receiving peer to accept prefixes with its own AN in the AS_PATH, up the maximum
number of instances, as configured by the
<occurrences> placeholder.
Examples [BGP]
Parameter Description
<neighborid>{<ip-address>|<ipv6-addr>|<peer-group>}
<ip-address> Specify the address of an IPv4 BGP neighbor, in
dotted decimal notation A.B.C.D.
<ipv6-addr> Specify the address of an IPv6 BGP4+ neighbor,
entered in hexadecimal in the format X:X::X:X.
<peer-group> Enter the 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 route-map (BGP and BGP4+)
command on page 3.159. When this parameter
is used with this command, the command
applies on all peers in the specified group.
<occurrences> <1-10> Specifies the number of occurrences of the AS number.
awplus#
configure terminal
awplus(config)#
router bgp 10
awplus(config-router)#
neighbor 10.10.0.1 allowas-in 3