neighbor as-override
Replaces the autonomous system number (ASN) of the originating device with the ASN
of the sending BGP device.
Syntax
neighbor
{
ip-address
|
ipv6-address
|
peer-group-name
}
as-override
no neighbor
{
ip-address
|
ipv6-address
|
peer-group-name
}
as-override
Parameters
Modes
BGP configuration mode
Usage Guidelines
BGP loop prevention verifies the ASN in the AS path. If the receiving router sees its own ASN in the AS path of the received BGP packet, the packet is dropped. The receiving router assumes that the packet originated from its own AS and has reached the place of origination. This can be a significant problem if the same ASN is used among various sites, preventing sites with identical ASNs from being linked by another ASN. In this case, routing updates are dropped when another site receives them.