If several MPLS VPN customer sites run BGP and want to use the same AS number throughout
there would
normally be a problem since standard BGP operation is to reject incoming external routes that
contain the local
AS number in their AS-path. What is a BGP facility that provides a workaround to this problem?
A.
AS-cutthrough
B.
AS-override
C.
AS-passthrough
D.
AS-transparent