<div dir="ltr"><div>Levels seem decent, so doesn't seem to be an issue with the transport.</div><div><br></div><div>Have you tried bypassing your router and dhcp direct to the internet? I've heard older consumer routers are having a hard time keeping up with now typical 100mbps speeds, maybe it's just getting long in the tooth there too.</div><div><br></div><div>Otherwise, it *is* comcast, the most consumer unfriendly isp out there, and loves to use packet shapers to throttle users down. Perhaps they don't like your using all your bandwidth and feel you need less, as they tend to do this with netflix, youtube, and other bandwidth intensive applications already.</div><div><br></div><div>It could just be peering congestion too, I've seen it with cox here periodically. I can usually tell running an mtr to something like <a href="http://google.com">google.com</a>, and watching for packet-loss and increased latency at the different peering hops. I tend to call a buddy that works there to harass him why their service sucks, and tend to hear back on some bandwidth augmentation processes going as a result, though ymmv with standard support as they'll have no idea, so just escalate otherwise if you see something like.<br></div><div><br></div><div>-mb<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Sep 5, 2018 at 10:55 PM, Jim <span dir="ltr"><<a href="mailto:jim.nantz15@comcast.net" target="_blank">jim.nantz15@comcast.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<p><br>
</p>
<br>
<div class="m_5436655925000841794moz-cite-prefix">On 09/05/2018 09:34 PM, Michael Butash
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>How exactly are you testing your connection? That's a
relevant bit regarding networking. If testing in phoenix,
test a LA California-based server, as most cox residential
egresses there. I like Race Communications out of LA to test
against on <a href="http://speedtest.net" target="_blank">speedtest.net</a>. Anything else
hits interstate transit, more than cox already does dumping
you out LA peering points.<br>
</div>
<div><br>
</div>
<div>Your host nic can handle line rate, and so can the kernel
in most cases, really the question is your transport and the
applications using it.</div>
<div><br>
</div>
<div>If using a <a href="http://speedtest.net" target="_blank">speedtest.net</a> sort of test, then
ymmv with the server you're testing against.. If dealing with
comcast, I don't know their peering infrastructure as much as
cox's, but they're not typically local, and probably transport
you to another state for egress. This isn't much different
from cox, they dump you out LA or Dallas, usually the former
than latter, only cbs and other direct peering relations
egress actually in phoenix. Post a traceroute to 8.8.8.8 if
you want some recommendations to test against for real world
usage.<br>
</div>
</div>
</blockquote>
I live about 30 miles north of Knoxville, a place called
Jacksboro.The server I've been testing is one Comcast has in
Nashville, <a href="http://speedtest.xfinity.com" target="_blank">speedtest.xfinity.com</a>. If I go to <a href="http://speedtest.net" target="_blank">speedtest.net</a>, I
usually get a comcast server in Nashville. I've used netwatch to
find whether or not they're the same server (they're not), but I get
similar results. Back in June when I was getting 150 Mbps, I did
speed tests with both servers and got results at least 50 Mbps
faster than I get now.<br>
<blockquote type="cite">
<div dir="ltr">
<div><br>
</div>
<div>Look at your modem levels too. You can hit your moto/arris
modem on <a href="http://192.168.100.1" target="_blank">http://192.168.100.1</a> url to see
your modem levels, this has existed since 2000 or so with the
advent of docsis and motorola not sucking. SNR, RX/TX power
are what you want to look at, and plenty of wikipedias about
docsis to explain tolerances. If not within tolerance, call
the provider to start digging and replace coax as necessary.<br>
</div>
</div>
</blockquote>
The SNR for all 8 downstream channels is 39dB. The power level for
each is -3dBmV.<br>
Tx power for all 3 upstream channels is 48 dBmV. i've looked it up
and anything i've seen says these levels are ok.<br>
<blockquote type="cite">
<div dir="ltr">
<div><br>
</div>
<div>Every few years my cable gets crappy, and I have to call
them to help me dig up and replace bits of either the yard or
house to replace. Arizona is hell on coax with suck-out and
other syndromes of extreme heat-based dysfunction. Expect
your levels to go to hell every 3-4 years in arizona with
coax.<br>
</div>
</div>
</blockquote>
I know. I used to work with a guy who installed sprinkler systems.
One day we were putting in system. He was using the trench digging
machine. It was throwing up rocks and dirt when it suddenly started
throwing up bits of RG6.<br>
<blockquote type="cite">
<div dir="ltr">
<div><br>
</div>
<div>HTH!<br>
</div>
</div>
</blockquote>
It does. Thanks.<br>
<br>
The cable here is strung up on poles. The cable tv rarely goes out,
and the internet is reliable if not as fast as it should be. The
power goes out at least once every two weeks no matter the weather.
It's out for an hour or so at a time. The power company blames it
on the squirrels. Apparently they like the taste of power lines
better than the flavor of tv cable.<br>
<br>
The dinosaur I'm writing this on used to be a Dell Inspiron 550. I
don't use the built in ethernet adapter because it's 100 Mbit. One
day I may get ambitious and try bonding the two interfaces
together. My next step will be to ask a friend to bring his laptop
over, plug it into my router and see what speed it gets. <br>
<br>
</div>
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