notes: BGP Network Migration

- Hide local-ASN feature is useful when necessary to connect to different SP's with more than one ASN number
- [no-prepend]: Does not prepend the "local" ASN to any routes received
- [replace-as]: Prepends only the "local" ASN in the AS-path The configured ASN from the BGP process is not prepended
- [dual-as]: Configures the eBGP neighbor to establish peering session with either real ASN or both

neighbor {ip} local-as {asn} [no-prepend [replace-as] [dual-as]]]



- Private AS numbers are removed from the tail(left) only of the AS-path before the update is sent
- Private AS numbers followed by a public AS number are not removed

neighbor {ip} remove-private-as