[183443] in North American Network Operators' Group
Re: NetFlow - path from Routers to Collector
daemon@ATHENA.MIT.EDU (Roland Dobbins)
Wed Sep 2 05:45:38 2015
X-Original-To: nanog@nanog.org
From: "Roland Dobbins" <rdobbins@arbor.net>
To: nanog@nanog.org
Date: Wed, 02 Sep 2015 16:43:58 +0700
In-Reply-To: <87io7tl4m2.fsf@snoopy.tippete.net>
Errors-To: nanog-bounces@nanog.org
On 2 Sep 2015, at 13:25, Pierfrancesco Caci wrote:
> 2 out of 2 large backbone networks I've experience with use inband for
> flow export.
There was supposed to be a 'should' in there, apologies.
I've already clarified that VLAN/VRF is Good Enough for flow telemetry,
and that most who separate it out from customer traffic do so logically.
There are a few very large networks who do this completely physically
out-of-band; they made the decision that they were going to invest in
the ability to ship telemetry around and analyze it, and spent a lot of
capex and opex to be able to do just that.
-----------------------------------
Roland Dobbins <rdobbins@arbor.net>
