[mrtg] Re: Alter MRTG Input/Output graph method

[Thomas Brian Granier]

Thanks for the response. I'm aware of the issue with graphic utilization
for full-duplex versus half-duplex. My primary concern with trying to do
this is for WAN links, not LAN links. I only have a few links internally
that are full duplex anyways... most are just a standard 10 MB link....
what I'm really trying to get at is seeing when my WAN links are going
over their CIR and when they are nearing their capacity... 

I've seen this RRDtool thing everywhere in the docs but I've never heard
of it. My presumption is that its because I've lived in a Microsoft
world for so long out of necessity that I've just never run across it...
I'm running MRTG on an NT machine... What is the RRD tool and does it
work with NT?

Thanks in advance... 

T. Brian Granier

-----Original Message-----
From: tkennedy at watcher.newsreal.com
[mailto:tkennedy at watcher.newsreal.com]On Behalf Of Tim Kennedy
Sent: Wednesday, May 03, 2000 5:06 PM
To: Thomas Brian Granier
Cc: MRTG Mailing List (E-mail)
Subject: Re: [mrtg] Alter MRTG Input/Output graph method




Well, on Full Duplex links you can exceed your 100% mark, because you
get
bandwidth going both ways.   So it's not a real measurement.

You could still display 100k of usage, but it's not really 100kper
second of
usage in the interface.  it's 40k of usage on the inbound channel, and
60k on
the outbound.  their not really using up the same space, so it doesn't
really
make sense to graph it that way.

On half duplex links, it makes sense though, since the link really is
limited
to 10mbit both ways.

I couldn't begin to tell you how to do it though.  I suppose you could
do it
with RRD tool, but I don't know how.

-Tim


On Wed, 3 May 2000, Thomas Brian Granier wrote:

> I'd like to alter the input/output graph of MRTG in the following way.
I
> would like the Output to be graphed added on top of the input value
> without altering the statistic read out at the bottom of the screen.
For
> example, if input=40K and output=60k I want MRTG to graph green up to
> 40K and put the blue line at 100K. The stats beneath would still read
> Current Input = 40K and Current Output = 60K.... Any thoughts?
> 
> T. Brian Granier
> MCSE MCP+I A+
> Telecommunications Specialist
> Zebec Data Systems
> 
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--
Timothy Kennedy
Network Engineer
YellowBrix, Inc.
tkennedy at yellowbrix.com
Cell: 703-798-3281
Ofc:  703-535-1863
Fax:  703-548-9151

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