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 Post subject: Network diagnostics - cable/DSL modems
 Post Posted: Wed Jun 20, 2007 7:31 pm 
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Joined: Sun Feb 04, 2007 1:32 pm
Posts: 225
My question is troubleshooting intermittent internet connectivity problems.
Home networks with wireless routers and a broadband connections. I have
had a couple jobs where I suspected a bad cable or DSL modem but could not
confirm it. After running ping -t to a remote host I look for long
response times and packet loss. Is there a reasonably priced device to
diagnose these problems or should I carry spare cable and DSL modems? DSL
can be so phinicky at times, I'm not sure a spare will always connect. All
hosts getting IP's fine, pinging local devices with no packet loss with
good response time. Lots of packets lost and bad response times when I
ping Yahoo. Any suggestions?

What vehicle are you currently building?

Thanks for your time.


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 Post Posted: Wed Jun 20, 2007 7:34 pm 
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Joined: Sun Feb 04, 2007 11:44 am
Posts: 5803
I recommend carrying spare *everything*, as in most cases spare modems and
other network gear will be more cost effective than specialized test
equipment. Carry a known-good cable modem, DSL modem, wireless router,
switch, cables, network cards, and of course a system (laptop preferred).
That way you can take any and all of the customer's equipment out of the
picture and establish connectivity using your known-good components, thus
allowing you to more easily and accurately determine whether any parts of
the network have truly failed or not.

Quote:
What vehicle are you currently building?


I sold my '94 Impala in late 2001, since then I've had a '98 Grand Cherokee
5.9 Limited. They called it a 5.9 LX in Europe, here's a TV commercial they
ran back in '98 for the European model:
http://www.neebu.net/~khuon/images/5.9L ... ial_EU.mov

I think of it as an all-season high performance station wagon. It is
excellent in the wet and snow, can tow up to 6,500 lbs, and has relatively
high levels of power and performance. So far it has run 14.9 @ 90 at the
dragstrip, which is slightly faster than my Impala ran, even though it has
full-time 4WD and fewer mods.

Of course it isn't as fun to drive as the Impala, because with the
full-time 4WD you can't really spin the tires unless you strap it down <g>:
http://youtube.com/watch?v=GonDijRphCY

I am planning on installing the following components:

Factory single plane intake manifold: http://tinyurl.com/225slo
1.7 roller rockers: http://tinyurl.com/ypps2y
Upgraded valvesprings: http://tinyurl.com/22at52
Titanium retainers: http://tinyurl.com/yvnecy

These parts should add about 30 HP, I'll know more after they are installed
and I make another run at the strip. Scott.


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