Little Problem

[Paul Aitken]

Michel Py wrote:

 > I am dual-homed (IPv6) to two different pTLAs (Viagenie and Caladan).
 > I have BGP peering with both using a private BGP ASN (#65432).
 >
 > Although there are ways around that (complicated ones), the main reason
 > it actually works is because nobody else is using that ASN.

At least, nobody else at Viagenie and Caladan ;)

 > World, please take note: ASN #65432 (easy to remember) is no longer
 > public but now the exclusive property of Michel Py.

No it's not. You just need to arrange this with Viagenie and Caladan.
They should be filtering routes that use private ASN's so those ASN's 
can be reused elsewhere.

See http://www.cisco.com/warp/customer/459/32.html and 
http://www.cisco.com/warp/customer/459/36.html. The examples are IPv4, 
but the same commands work equally well for IPv6.

Having said that, I do see a few private ASN's in use: 64700, 65001, 
65302, 65304, 65305 and 65525. Hmmm.

 > in the current situation people that
 > are NOT pTLAs still need an ASN if there are multihomed.

You only need an ASN if you're using BGP, and not everyone is. But true, 
being multihomed without BGP (and therefore your own ASN) would 
be pointless.
-- 
Paul Aitken
IPv6 Development, Cisco Systems Ltd, Edinburgh, Scotland.