[155888] in North American Network Operators' Group
Re: Level 3 BGP Advertisements
daemon@ATHENA.MIT.EDU (Blake Dunlap)
Wed Aug 29 16:14:09 2012
In-Reply-To: <6E5736BD68F770449C74FBAD975F807C8E18A64F@NYDC-EXCH01.vinci-consulting-corp.local>
From: Blake Dunlap <ikiris@gmail.com>
Date: Wed, 29 Aug 2012 15:13:19 -0500
To: Paul Vinciguerra <pvinci@vinciconsulting.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
> If you have provided addressing from your aggregate to your customer and
> they have indicated that they are multi-homing, you need to preserve their
> prefix-length in your outbound advertisements, or the redundant provider
> carries the inbound traffic. Is this also frowned on? To me, this is the
> multihoming tax we all pay for.
>
> Paul
>
>
Someone multihoming below you on PA space is a pretty special case (part of
why I said generally above actually), but definately one I would consider
valid as for passing the announcements through from their AS.
-Blake
