netdev - Re: Packet per Second

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Message-ID:  <nemoMon121707091528@flis.man.torun.pl>
Date:	Mon, 17 Dec 2007 11:18:57 +0000 (UTC)
From:	Flávio Pires <flavio.defreitas@...il.com>
To:	netdev@...r.kernel.org
Subject:  Re: Packet per Second

In article <1197671513.5973.10.camel@...romache> Glen
Turner<gdt@....id.au> wrote:
>  On Fri, 2007-12-14 at 15:34 +0000, Flvio Pires wrote:
>>   Well, I work on an ISP and we have a linux box acting as a
>> bridge+firewall. With this bridge+firewall we control the packet
>> rate per second from each client and from our repeaters. But I can`t
>> measure the packet rate per IP. Is there any tool for this?

>  The usual approach is to generate NetFlow records -- there are
>  a number of Linux tools for this. Collect them with a
> collector(flow-tools being a common choice). Then have a Perl script
> which reads the flow records, processes them whichever way you
> desire, and drops the result into a rrdtool file (there are modules
> for both reading the flow-tools data and outputing in the
> rrdtoolformat). The rrdtool utilities have a limited range of graphs,
> but there is a huge selection of graphing packages from other authors
> for rrdtool-stored data (Drraw, etc).  Flow-tools also
>  has some third-party analysis tools, some of those have good
>  "top talker" statistics.

>  This is a lot of work, since you are really putting a
> completemeasurement infrastructure in place to get the one statistic
> you desire.  But I'd encourage you to do that, since knowing
>  one statistic usually leads to further questions of the data

Thx for the answer Glen,

I alread though about something like this. But, isn`t NetFlow just for
Cisco IOS ?



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