[AusNOG] AS 4byte support in .au

[James Spenceley]

On Thu, Jul 02, 2009 at 06:59:50AM +1000, Skeeve Stevens wrote:
> Any transit providers doing 4byte AS support yet?


Skeeve,

Yes, We'll  all our edge routers will natively support 4Byte ASNs  
within a week or two.

> On 02/07/2009, at 11:16 AM, Geoff Huston wrote:
>
>>
>> The issue I see so far from 32bit ASNs are lack of support from our
>> favourite vendor in versions people would be comfortable running.
>>
>
>
> from the installed base of BGP all these 4 byte ASNs appear as AS
> 23456. which is a perfectly fine AS number in the 2 byte AS BGP world.


It's just not so great when you have more than one customer with 23456.

>
>
>> http://www.apricot.net/apricot2009/images/lecture_files/apricot-2008-32-bit-
>> asn.pdf
>> (Page 15) has a list of vendors and their versions required for
>> support.
>
>
> 4 byte AS numbers have been used in the Internet now for the last 2
> 1/2 years - there are 31 visible today in BGP from where I sit in the
> routing syste, and as far as I can see the Internet has been just fine
> and noone has noticed, nor cared.


I expect that all those 31 are configured to different parts of the  
Internet, so the Internet might be fine but our part of it would  
certainly have freaked out when the second customer turns up with  
23456 :-)


--
James