Re: Help needed with intermittent internet

Comcast on their end only sees their connection to line amplifiers.
That number only says whether everyone is getting connected. It says
zero about a connection only on your end.

Again, your problem is classic of intermittents which is why a
provider should provide S/N ratios on your modem that you can
monitor. Did the Comcast tech look at signal strength from modem
while standing in the room - or instead only with his measuring
equipment? Modem can report valid and useful number. Their equipment
can only report what modem 'might' see - and not from their equipment
on other side of amplifiers.

Remember a trend among techs. It was never a problem elsewhere;
therefore it is not your problem.

Listed were numerous things to perform. Did they confirm above
listed connections? Your post did not reply to what can create a
significant problem and can only be identified by visual inspection..
And yes, many techs do not appreciate the engineering even in simple
earthing. Often because it did not cause a problem elsewhere;
therefore is not your problem. Did they perform the 'reroute' test?
If not, then why not? Is existing cable good only because they know
it must be good?

Meanwhile, what did you do to verify a problem does not exist on
subscriber side of modem? For example, as your computer pings the
modem constantly, what happens to ping (the numbers) both when
connections are working and not?.

Again, their levels can always look good. But only valid number is
S/N number read directly from your modem. Any only valid number is
both when connection is working and has failed. That number must be
measured on your end of wire and is only useful if read directly by
modem. That number read anywhere else says nothing about your unique
connection.

Your post implies a "we have done everything and nothing is wrong"
attitude. One indication of a bad attitude is no numbers taken when
system is both working AND while failure is ongoing. But again, who
confirmed the earthing connection? I don't see the results of an
inspection so critical that I posted it. Who monitored the S/N
numbers both when modem is working AND when a failure occurs? And who
did same thing using ping from subscriber side - and collected numbers
from that ping both when connections are good and bad? Nothing in
that previous post can be ignored if the problem is to be solved.
Nothing in the last post says to me that technicians are really
looking for a problem.

On May 6, 10:50 am, "JM" <jakem38671omitt...@xxxxxxxxx> wrote:
I cannot access the modem's config, but Comcast (both locally and the level
2 guys in their Denver NOC) insist that their levels (S/N, upstream,
downstream) are all "within spec." And, regarding their support, I've now
spoken to more knowledgeable, more sincere Comcast people, and I'm convinced
for the most part that they are simply as stumped as I am about this whole
deal.

How strange is this: Every morning the internet is down. I can neither
access the lan nor ping the modem's gateway address remotely during this
time. However, as soon as I call Comcast and the support person pulls up
the portal to "take a look," the internet starts working again.

It's the most bizarre thing. It's as if the modem is going to sleep at
night. However, in Comcast's software the modem shows to be online the
entire time.

.

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