On 24/06/11 08:12, Ed Greshko wrote:
> On 06/24/2011 07:38 PM, Bob Goodwin wrote:
>> Can someone suggest a way of measuring usage per device,
>> identifying them by address, MAC, or uuid? I really need to know
>> which one is the offender to control the problem.
>>
> It is quite impossible to properly think about answering your question
> without knowing the topology of your LAN. Basically, is not possible to
> measure traffic from individual systems unless all traffic passes
> through a "choke point".
>
> Even if, for example, all of your systems connect via Ethernet cables to
> a router, which then connects to the your ISP, the monitoring would most
> probably need to be done on the router itself since most of these
> devices employ switch technology.
>
The "choke point" is a Linksys E3000 wireless router running
DD-WRT connected to the "modem." DD-WRT apparently has a log
function but it appears to be temporary in that the data appears
and disappears quickly in some way that I have never understood.
Unlike this list the dd-wrt forum is difficult to deal with and
has provided little useful information.
But yes, I understand the router is the point at which
everything converges. I suppose I could insert a hub between the
router and the "modem." By devices I mean iPhones, iPads,
iLaptops, Mac and PC desktops, and my own Linux computers, a
mixture of wired and wireless
I have Ntop running on an F-14 computer, the i686 version is not
yet available for F-15 unless it got fixed overnight. However I
haven't been able to get the kind of information I need out of
that either, perhaps due to my own ignorance. It's a pretty
complex program and does display a lot of information though.
Bob
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