Specifications

neighbor as-override
MP-366
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
neighbor as-override
To configure a provider edge (PE) router to override the autonomous system number (ASN) of a site with
the ASN of a provider, use the neighbor as-override command in router configuration mode. To remove
Virtual Private Network (VPN) IPv4 prefixes from a specified router, use the no form of this command.
neighbor i
p-address as-override
no ne
ighbor ip-address as-override
Syntax Description
Defaults Automatic override of the ASN is disabled.
Command Modes Router configuration
Command History
Usage Guidelines This command is used in conjunction with the site-of-origin feature, identifying the site where a route
or
iginated, and preventing routing loops between routers within a VPN.
Examples The following example shows how to configure a router to override the ASN of a site with the ASN of
a pr
ovider:
Router(config)# router bgp 100
Router(config-router)# neighbor 192.168.255.255 remote-as 109
Router(config-router)# neighbor 192.168.255.255 update-source loopback0
Router(config-router)# address-family ipv4 vrf vpn1
Router(config-router)# neighbor 192.168.255.255 activate
Router(config-router)# neighbor 192.168.255.255 as-override
ip-address Specifies the IP address of the router that is to be overridden with the
ASN provided.
Release Modification
12.0(7)T This command was introduced.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2SX This command is supported in the Cisco IOS Release 12.2SX train.
S
upport in a specific 12.2SX release of this train depends on your
feature set, platform, and platform hardware.