[nsp] conditional BGP config - help

matthew zeier mrz at intelenet.net
Mon Mar 22 14:41:14 EST 2004


>
> >One of my backup transit providers in turn buys transit from Aleron.  I'm
> >trying to keep all traffic away from Aleron, however, certain broadband
> >providers (Cox) appear to also get transit from Aleron.  Occassionally,
> >Aleron appears to prefer my extra 10 AS prepends over my other upstream
> >providers.
> >
> >
>
> Ten prepends is bad, some people filter on maximum AS path length and
> this will almost certainly fall foul of this.


And do what?  Strip everything off or ignore the announcement?  The latter
would be fine with me.



> There's probably a BGP community you can send to tweak the localpref at
> their end and fix this - at a guess Aleron are preferring customer
> routes over peering routes, which is quite normal.

Perhaps - wish I could get someone from Aleron to get back to me.



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