[100874] in North American Network Operators' Group
RE: BGP Communities
daemon@ATHENA.MIT.EDU (Neil J. McRae)
Mon Nov 19 02:42:19 2007
From: "Neil J. McRae" <neil@domino.org>
Date: Mon, 19 Nov 2007 07:41:09 +0000
To: James Blessing <james.blessing@entagroup.com>, <nanog@merit.edu>
Errors-To: owner-nanog@merit.edu
James,
Community lists and route maps but the place to start is a sheet of paper a=
nd to think about what your goal is. Its quite easy (especially on large ne=
tworks) to build contradictory logic. Also beware what implications you hav=
e for cost and capacity. E.g. A customer could signal send all my traffic v=
ia $expensivetransit and you then lose money quick.
Communties are also good for blackhole signalling but remember your custome=
rs will raise queries when deploying them too!
Regards,
Neil
-----Original Message-----
From: James Blessing <james.blessing@entagroup.com>
Sent: 19 November 2007 07:17
To: nanog@merit.edu
Subject: BGP Communities
Hi,
Following up on the thread about BGP communities, I was wondering if
there is a guide on how to actually implement communities within a
network...
There are a couple of presentations about why communities are good and
about the general design of communities but my googlefu has so far not
found a "Here is how to deploy Communities" guide that takes into
account the important things like configuration maintenance, how to
scale and what mistakes not to make.
We are a Cisco house so any Cisco specific documentation would be great
but any guide right now would be a start.
J
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