[AusNOG] OPTUS BGP Communities

Phillip Grasso phillip.grasso at gmail.com
Fri Jun 20 14:17:38 EST 2008


In the old days (hmmm 5 years ago), they use to support something
similar to rfc1998+ communities;

try 7474:70 / 80 / 90, which I believe use to change their local
prefers to 70/80/90 respectively.

However I'm not sure how their internal LP schema works, so there is a
potential that if your trying to avoid going via Optus entirely e.g.
AS7474 they might have their transits/peers still at an even lower
local pref then anything you can manually configure.
Best Regards
   Phill


2008/6/20 Sean K. Finn <Sean.Finn at ozservers.com.au>:
> Hi All,
>
>
>
> Thanks for all of your replies r.e. UDP flooding and creative BGP Techniques
> J
>
>
>
> Does anyone know if OPTUS supports Community ID's in their BGP annoucements
> for route selection?
>
>
>
> I Know AAPT does, which allows us to announce our IP ranges to AAPT
> requesting wheter they are advertised to Australia or International peers,
> etc.
>
>
>
> The rationale is that we'll select some of our links to have Australian
> routes only, with the other providers having no annoucment limitations, but
> a longer BGP path so that International traffic will prefer to come down the
> one link, jamming it when we get a UDP flood, and still allowing all
> Australian traffic to come through the other links if the designated
> international route is jammed with UDP.
>
>
>
> Cheers,
>
> Sean.
>
>
>
>
>
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