[183402] in North American Network Operators' Group
Re: NetFlow - path from Routers to Collector
daemon@ATHENA.MIT.EDU (Tarko Tikan)
Tue Sep 1 15:47:14 2015
X-Original-To: nanog@nanog.org
To: nanog@nanog.org
From: Tarko Tikan <tarko@lanparty.ee>
Date: Tue, 1 Sep 2015 22:47:09 +0300
In-Reply-To: <67DCFF67-BC56-4822-A5E5-4C96BFBA0372@arbor.net>
X-SA-Exim-Mail-From: tarko@lanparty.ee
Errors-To: nanog-bounces@nanog.org
hey,
> It should've already been spent for an OOB/DCN network, which should've
> been provisioned with flow telemetry in mind.
Bad advice. No amount of money will fix major platforms that are not
happy to export flow telemetry via router management ports. Sometimes it
can be done via nasty vrf leaking hacks, sometimes it cannot be done at
all. Management ports are typically directly connected to routing
engines while netflow data is generated in hardware in PFE.
In-band netflow works on all platforms without such issues.
--
tarko
