sFlow vs netFlow/IPFIX

Saku Ytti saku at ytti.fi
Mon Feb 29 19:06:23 UTC 2016


On 29 February 2016 at 17:40, Phil Bedard <bedard.phil at gmail.com> wrote:
> It would be interesting to get some data from vendors on what the actual limitation is.  I know with some new platforms like the NCS 55XX from Cisco (BRCM Jericho) it has limited space for counters, but I don’t know if that contributes to its minimum 1:8000 Netflow sampling rate.  The new PTX FPC supporting Netflow has a minimum of 1:1000.

Are they are doing netflow in HW at all? To me it sounds like they
might be doing it in LC CPU and HW is only doing sampled punting.
Which would explain the performance hit.
I would be very surprised if Jericho could do netflow in HW. And I'm
100% sure PE chip can't do netflow in HW.


-- 
  ++ytti


More information about the NANOG mailing list