Chapter 29
| IP Routing Commands
Border Gateway Protocol (BGPv4)
– 967 –
Default Setting
Disabled
Command Usage
â—† 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.
â—† 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.
â—† 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.
map-name – Name of the route map. The route map can be used to filter
the networks to advertise or receive based on various attributes.
(Range: 1-128 characters)
in – Filter inbound routing updates.
out – Filter outbound routing updates.
Command Mode
Router Configuration
Default Setting
No route maps are configured nor bound to any neighbor.
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