When you disable the AS_PATH check
function for routes learned from a specific location, BGP does not reject routes that
contain the recipient BGP speaker's AS number.
Procedure
-
Access global configuration
mode.
device# configure terminal
-
Access BGP configuration mode.
device(config)# router bgp
-
Access IPv6 address family
unicast configuration mode.
device(config-bgp-router)# address-family ipv6 unicast
-
Disable the BGP AS_PATH check
function.
device(config-bgp-ipv6u)# neighbor 2001:db8:e0ff:783a::4 allowas-in 3
This example specifies the neighbor allowas-in command, the
IPv6 address of the neighbor, and the variable 3, which
represents the number of times that the AS path of a received route can contain
the BGP speaker's ASN and still be accepted.
Example
The following example summarizes the commands in
this procedure.
device# configure terminal
device(config)# router bgp
device(config-bgp-router)# address-family ipv6 unicast
device(config-bgp-ipv6u)# neighbor 2001:db8:e0ff:783a::4 allowas-in 3
