neighbor local-as

Causes the device to prepend the local autonomous system number (ASN) automatically to routes received from an eBGP peer.

neighbor { ip-address | ipv6-address | peer-group-name } local-as num [ no-prepend ]
no neighbor { ip-address | ipv6-address | peer-group-name } local-as num [ no-prepend ]
ip-address
Specifies the IPv4 address of the neighbor.
ipv6-address
Specifies the IPv6 address of the neighbor.
peer-group-name
Specifies the peer group name configured by the neighbor peer-group-name command.
num
Specifies the local ASN. Range is from 1 through 4294967295.
no-prepend
Causes the device to stop prepending the selected ASN.

BGP configuration mode

The no form of the command removes the local ASN.

The following example ensures that a device prepends the local ASN. 


device# configure terminal
device(config)# router bgp
device(config-bgp-router)# neighbor 10.11.12.13 local-as 100

The following example stops the device from prepending the selected ASN. 


device# configure terminal
device(config)# router bgp
device(config-bgp-router)# neighbor 10.11.12.13 local-as 100 no-prepend