Chapter 50
| IP Routing Commands
Border Gateway Protocol (BGPv4)
– 1112 –
neighbor
remove-private-as
This command removes private autonomous system numbers from outbound
routing updates to an external neighbor. Use the no form to disable this feature.
Syntax
neighbor {ip-address | group-name} remove-private-as
ip-address – IP address of a neighbor.
group-name – A BGP peer group containing a list of neighboring routers
configured with the neighbor peer-group command.
Command Mode
Router Configuration
Default Setting
Disabled
Command Usage
◆ This command only applies to eBGP neighbors. It is used to avoid passing an
internal AS number to an external AS. Internal AS numbers range from 64512-
65535, and should not be sent to the Internet since they are not valid external
AS numbers.
◆ This configuration only takes effect when the AS Path attribute of a route
contains only internal AS numbers. If the AS Path attribute for a route contains
both internal and external AS numbers, the route will not be processed.
◆ This command may be used in BGP confederations provided that the private AS
numbers appear after the confederation portion of the AS path.
Example
Console(config-router)#neighbor 10.1.1.64 remove-private-as
Console(config-router)#
neighbor route-map This command specifies the route mapping policy for inbound/outbound routing
updates for specified neighbors. Use the no form to remove this policy binding.
Syntax
neighbor {ip-address | group-name} route-map map-name {in | out}
no neighbor {ip-address | group-name} route-map {in | out}
ip-address – IP address of a neighbor.
group-name – A BGP peer group containing a list of neighboring routers
configured with the neighbor peer-group command.
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