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To: linux-kernel@vger.kernel.org
Subject: Re: NetFlow export
From: Florian Weimer <fw@deneb.enyo.de>
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Date: Thu, 13 Mar 2003 12:57:08 +0100
In-Reply-To: <20030313114809.GA29730@unthought.net> (Jakob Oestergaard's
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Jakob Oestergaard <jakob@unthought.net> writes:

> On Thu, Mar 13, 2003 at 12:07:00PM +0100, Florian Weimer wrote:
>> Are there any patches which implement kernel-based NetFlow data
>> export?
>
> Netramet works very well - it's userspace (and very flexible indeed).

According to the documentation, it can receive NetFlow data and
process it, but it cannot generate such data.

> No need to clutter the kernel with an SNMP stack too, if you ask me.

NetFlow doesn't use a complicated packet format and is not based on
SNMP.  You can parse version 5 or 7 packets in 10 lines of Perl code,
using a few calls to "unpack".
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