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Date:      Tue, 13 Dec 2005 21:34:28 -0800
From:      "Ted Mittelstaedt" <tedm@toybox.placo.com>
To:        "Kiffin Gish" <kiffin@gish.demon.nl>, <freebsd-questions@freebsd.org>
Subject:   RE: Lousy network performance ...
Message-ID:  <LOBBIFDAGNMAMLGJJCKNIEAFFDAA.tedm@toybox.placo.com>
In-Reply-To: <000201c5ffc5$ce8bdd40$2101a8c0@ZGISH>

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Turn on SNMP on your router plugged into the adsl modem and use a
tool like mrtg to graph the circuit utilization.

Also, access your adsl modem's error counters and find out what your
signal to noise ratio is, what your received decibel level is, if your
taking
errors, and such.  Some of the consumer modems do not have these
counters accessible and can only be queried via the DSLAM operator.

Your service provider is right to push the problem back to you because
it almost certainly is not their network.  If it was their network you
would
notice a definite change at different time of days - if they are
overloaded
then at 4:00am you should get lightning speed.  If your DSL sucks at
that time then it's your problem, not their network.

Unfortunately for you, however, your service provider didn't explain
to you what you need to do to properly troubleshoot this.  It could
possibly be that you ASSUMED the problem was their network and
pissed them off when you called in.  I would suggest you call them
again, politely, and ask, not demand, that they check signal levels
and error counters on your phone line.  If they can't do this then have
them refer you to the telco that can.

One other piece of advice for you, if your goal is to "prove" the ISP
is wrong then you ought to just find another ISP.  Your goal should
be to find out the cause of the slowness, not in assessing blame.
If your using a consumer ISP it is likely the first level tech support
people probably cannot help you since their main job is helping
people fix their misguided PC desktops, and they usually aren't
even allowed to touch the back end equipment. But they can in
fact hurt you badly by simply not passing you to the upper-level
tech people who could help you.  So, be nice to them.

Ted

>-----Original Message-----
>From: owner-freebsd-questions@freebsd.org
>[mailto:owner-freebsd-questions@freebsd.org]On Behalf Of Kiffin Gish
>Sent: Tuesday, December 13, 2005 1:16 AM
>To: freebsd-questions@freebsd.org
>Subject: Lousy network performance ...
>
>
>I am having problems with a slow Internet DSL-connection,
>especially while
>surfing around the web.
>
>My service-provider claims that his network is just fine (of
>course!) and
>that the problem is because of all the 'so-called junk' I have
>configured on
>my home network on my side of the connection.
>
>On my side of the adsl-modem/router I have a router which is connected
>directly to two Windows XP desktops, via a switch to two
>FreeBSD machines
>(webserver and fileserver) and via a wireless link my combo
>FreeBSD/Windows
>XP laptop. I have Samba running for file exchange bweteen the
>Windows and
>FreeBSD boxes and I have port 80 opened on the
>adsl-moden/router to allow
>access to a couple of web sites I am running.
>
>Is there some kind of way to prove my ISP is wrong by doing a
>trace? What
>tools are available? How can I demonstrate that the bottleneck is not my
>home network but the DSL-connection?
>
>Thanks a lot in advance.
>
>--
>Kiffin Rex Gish
>Gouda, The Netherlands
>
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>




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