[c-nsp] Netflow / 3560 platform

[David Curran]

I would add that the 6500/7600 can "do" netflow but not well.  I think the
true limitation is that these platforms are switches, not routers.  So as
previous responses have stated, things are done in hardware, not software.
Platforms without route processors would be hard pressed to due the
necessary work to properly log and export flows.

At least that's the excuse we get when we run into netflow issues on the
7600 platform...

> From: Gert Doering <gert at greenie.muc.de>
> Date: Thu, 31 Jul 2008 02:40:19 -0400
> To: Brian Spade <bitkraft at gmail.com>
> Cc: <cisco-nsp at puck.nether.net>
> Subject: Re: [c-nsp] Netflow / 3560 platform
> 
> Hi,
> 
> On Wed, Jul 30, 2008 at 07:00:22PM -0700, Brian Spade wrote:
>> Hi, adding back cisco-nsp
>> 
>> On Wed, Jul 30, 2008 at 6:54 PM, Buhrmaster, Gary
>> <gtb at slac.stanford.edu>wrote:
>>>> Can anyone explain why Cisco fails to support Netflow on the
>>>> 3560 Catalyst switches?
>>> 
>>> They did not build the hardware to support it.
>>> 
>>> One of the many feature/cost choices made on
>>> that platform during the design.
>> 
>> These routers are software based -- Cisco 800, 1800, 2800, and 3800 -- and
>> support Netflow.
> 
> That's the point: they are software based.  You can do everything on
> SW based platforms.
> 
> The 3560 is hardware based, and it's "fairly simple" hardware, as opposed
> to a 6500/7600, which has more complex (and more expensive!) hardware.
> 
> So the 3560 hardware just cannot do it, because implementing it would have
> made the box much more expensive.
> 
> gert
> -- 
> USENET is *not* the non-clickable part of WWW!
>                                                            //www.muc.de/~gert/
> Gert Doering - Munich, Germany                             gert at greenie.muc.de
> fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de



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