# bgpctl show rib 203.10.62.0/24 flags: * = Valid, > = Selected, I = via IBGP, A = Announced origin: i = IGP, e = EGP, ? = Incomplete flags destination gateway lpref med aspath origin *> 203.10.62.0/24 147.28.0.1 100 0 0.3130 0.1239 0.4637 0.4637 0.4637 0.4637 0.4637 0.4637 0.1221 1.202 i George Michaelson, Randy Bush and myself have successfully tested the implementation of 4Byte AS BGP on a public Internet transit. The above BGP RIB snapshot was taken at a 4Byte BGP speaker in North America, showing a transit path across AS 1221, AS 4637, AS 1239 and AS 3130 , with correct reconstruction of the originating AS at the other (4Byte AS) end. The code base used was OpenBGPD, with 4 byte patches that I've added to the code in the past couple of weeks. (Patched versions of openbgpd to include 4-byte AS support can be found at http://www.potaroo.net/tools/bgpd/) cheers, Geoff