nanog mailing list archives
Re: NetFlow - path from Routers to Collector
From: "Roland Dobbins" <rdobbins () arbor net>
Date: Wed, 02 Sep 2015 05:51:41 +0700
On 2 Sep 2015, at 5:38, Jared Mauch wrote:
Please stop digging,
Since I'm not digging, I've no reason to stop. I see and deal with the various quirks of more different platforms exporting flow telemetry than most folks, all day, every day, so I know just a little bit about this topic.
Sounds like you haven’t used Cisco recently.
I use Cisco all the time, thanks. They aren't perfect - no vendor is. They have various issues with their NetFlow implementations on various platforms - for example, bursts of wildly inaccurate flow statistics from CRS boxes when a linecard is rebooted, a problem which has persisted for years and is just now being addressed. Odd stuff with EARL8 on Sup2T/DFC4 in certain configurations, and so forth.
But Niels is grossly exaggerating. I get very usable flow telemetry from them in many, many networks. I deal with flow telemetry from many, many vendors/platforms, and I can confidently assert that Cisco are nowhere near the bottom of the heap when it comes to the verisimilitude and functionality of their flow telemetry export. Quite the opposite
----------------------------------- Roland Dobbins <rdobbins () arbor net>
Current thread:
- Re: NetFlow - path from Routers to Collector, (continued)
- Re: NetFlow - path from Routers to Collector Shane Ronan (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector George, Wes (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Niels Bakker (Sep 02)
- Re: NetFlow - path from Routers to Collector Tarko Tikan (Sep 01)
- Re: NetFlow - path from Routers to Collector Valdis . Kletnieks (Sep 01)
- Re: NetFlow - path from Routers to Collector Niels Bakker (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Jared Mauch (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Jared Mauch (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Nick Hilliard (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Jared Mauch (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- RE: NetFlow - path from Routers to Collector Chuck Church (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Jared Mauch (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)