[54206] in North American Network Operators' Group
Re: Alternative to NetFlow for Measuring Traffic flows
daemon@ATHENA.MIT.EDU (Joe Abley)
Mon Dec 16 23:03:24 2002
Date: Mon, 16 Dec 2002 23:02:42 -0500
Cc: Richard A Steenbergen <ras@e-gerbil.net>,
"William B. Norton" <wbn@equinix.com>,
"K. Scott Bethke" <kbethke@thruport.com>, nanog@merit.edu
To: grant@tnarg.org
From: Joe Abley <jabley@isc.org>
In-Reply-To: <200212161947.34245.grant@tnarg.org>
Errors-To: owner-nanog-outgoing@merit.edu
On Monday, Dec 16, 2002, at 22:47 Canada/Eastern, Grant A. Kirkwood
wrote:
> On Monday 16 December 2002 07:37 pm, Joe Abley wrote:
>> If you are interested in traffic *to* a particular destination, surely
>> you could just tweak localpref on routes based on an as-path filter?
>
> And then quantify it how? Ie; useful Netflow-like "x Mbps to AS x, y
> Mbps to
> AS y" statistics?
I think the idea was to say "well, from the mrtg graph, the difference
between this circuit with all my _9327_ traffic and this circuit
without any _9327_ traffic, at what I might reasonably estimate their
peak time to be, looks to be about 2 megs or so".
It's a pretty crude measure, but it does have the advantage of
requiring no more than mrtg and a route-map to set up.
Joe
