[mrtg] Re: Weird statistics - Please help

[Ambrose Chiu]

First thing first. MRTG takes a snapshot of the target every 5 mins by
default and you can set this to 1 or 2 or etc by changing setting in
your crontab. So if it could be that the instance when MRTG collects
data from your network card, your download has finished or there happens
to be not much downloads. Try setting MRTG to run every 1 min and you
would get better data.

Second thing is that you should identify which NIC is connected to your
cable modem and view the graph with that NIC coz traffic on your local
NIC might have different traffic. Also don't forget that MRTG will
display 30k on the graph instead of 30000bytes as you might be
expecting.

Ambrose Chiu
Linux System Analyst
Gibraltar Solutions Inc.

> -----Original Message-----
> From:	cpt2 at daimlerchrysler.com [SMTP:cpt2 at daimlerchrysler.com]
> Sent:	Friday, November 19, 1999 2:19 PM
> To:	mrtg at list.ee.ethz.ch
> Subject:	[mrtg] Weird statistics - Please help
> 
> 
> 
> Hi all,
> 
> I'm using MRTGg to track my cable modem.  I have NT with 2 nics and a
> win95
> machine.
> 
> When I download something (using win95) the graph shows proper speed
> (i.e.
> 30kbytes/sec).
> 
> But when I check the NIC the cable modem is pluggged into, it shows
> barely any
> traffic.
> 
> I think I'm correct in asuming that the graph for the NIC conencted to
> the
> cable modem should show the same throughput.  Yet it doesn't, it shows
> traffic
> like 3 or 4 bytes/sec.
> 
> Can anyone suggest something here?
> 
> I realize that I have 2 NICs in the NT machine, so when I run the
> cfgmaker, it
> should make no difference which IP I use as long as it's the correct
> adapter
> (2).  Am I wrong in assuming this?  If so why?
> 
> It's very annoying because I want to see the traffic on the card that
> is
> connected to the cable modem to show me the proper cable modem
> throughput.  I
> cannot use the card on the Win95 machine, since I download/upload to
> my NT
> server on the local network, and the speeds here are much higher.
> 
> Please help.
> Cheers,
> Chris
> 
> 
> P.S. This used to work just fine until a few days ago.
> 
> 
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