[155878] in North American Network Operators' Group
Re: Level 3 BGP Advertisements
daemon@ATHENA.MIT.EDU (Andy Davidson)
Wed Aug 29 15:39:51 2012
From: Andy Davidson <andy@nosignal.org>
In-Reply-To: <12eb921c$6a0de4a3$7efc90a$@flhsi.com>
Date: Wed, 29 Aug 2012 20:39:18 +0100
To: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 29 Aug 2012, at 20:28, Nick Olsen <nick@flhsi.com> wrote:
> In practice, We've always advertised our space all the way down to =
/24's=20
> but also the aggregate block (the /20 or the /21). Just so there was =
still=20
> reachability to our network in the event that someone made the foolish=20=
> mistake of filtering lets say prefixes smaller /23...
Filtering your de-aggregated prefixes in the presence of covering =
aggregates in this case would certainly not be foolish. :-)
Please, unless you really know why you need to do otherwise, just =
originate your aggregates.
Your friends,
Every other Autonomous System=
