Re: Losing internet connection during large downloads.

On Apr 27, 7:20 am, Robert Heiling <robh...@xxxxxxxxxxx> wrote:
Ladlenits wrote:

On Apr 26, 12:48 pm, Robert Heiling <robh...@xxxxxxxxxxx> wrote:
Ladlenits wrote:

Greetings everyone,

Ill try to keep this short and sweet. I have Charter as my cable ISP.
I have a Motorola SB5120 cable modem. I have had this setup for almost
2 years without any problems at all. Recently (about a month ago) I
began losing my internet connection during heavy downloading and then
about 5 minutes after that it would come right back (don't need to
restart the modem or anything just pops back on). I download from
newsgroups so this was when i first noticed this. After about 5
minutes of heavy downloading my connection would completely disappear,
downloads would stop and i could not get anywhere on the internet. The
strange thing was all the lights on my modem were still lit up.
I figured this must be a problem with my router so i replaced that.
Same thing happened. I figured well maybe my network card was bad,
still same thing. At this point i tried everything. I setup a new
account with a different Usenet server same thing, tried downloading
directly from a website with large files, same thing. Tried a laptop
on my network same problem so now im completely confused and ready to
give up and just live with it.
I decide what the hell i guess i could talk to Charter's tech support.
I was transfered to someone who i could tell immediately could not
speak English to well (not trying to knock the guy Ive come to expect
that now, and he works a lot harder than i do to earn a living so i
respect that). I tried explaining my situation to him and didn't get
very far so he transfered me to on of the head techs. We talked for
about 20 minutes while i my connection crashed and came back up and he
could see i was losing my connection but had no answers. He said he
opened a trouble ticket and that they would be working on it and have
it back up. Well that was 2 weeks ago and I haven't heard anything. I
have looked all over to find some similar issues and cant find
anything. I am hoping one of you out there will be my savior. If you
have any suggestions on what i can do to fix this i would realllly
appreciate it. Thanks in advance.

I've a hunch that you'll see something interesting in your modem logs:http://192.168.100.1/logs.htm

and your signal levels may tell us something:http://192.168.100.1/signal.htm

Bob- Hide quoted text -

- Show quoted text -

Thanks for the help Bob.

I checked the logs and here are the problems that seem to show up:

2007-04-23 19:25:29 5-Warning D03.0 DHCP WARNING - Non-critical field
invalid in response
2007-04-23 19:25:29 5-Warning DHCP: Renew: Missing Syslog server
2007-04-20 07:25:29 5-Warning D03.0 DHCP WARNING - Non-critical field
invalid in response
2007-04-20 07:25:29 5-Warning DHCP: Renew: Missing Syslog server
2007-04-16 19:25:29 5-Warning D03.0 DHCP WARNING - Non-critical field
invalid in response
2007-04-16 19:25:29 5-Warning DHCP: Renew: Missing Syslog server
2007-04-13 07:25:29 5-Warning D03.0 DHCP WARNING - Non-critical field
invalid in response
2007-04-13 07:25:29 5-Warning DHCP: Renew: Missing Syslog server
2007-04-09 19:25:29 5-Warning D03.0 DHCP WARNING - Non-critical field
invalid in response
2007-04-09 19:25:29 5-Warning DHCP: Renew: Missing Syslog server
Here is my signal status:

Downstream
Value
Frequency 643750000 Hz
Signal to Noise Ratio 37 dB
QAM QAM256
Network Access Control Object ON
Power Level 9 dBmV The Downstream
Power Level reading is a snapshot taken at the time this page was
requested. Please Reload/Refresh this Page for a new reading

Upstream
Value
Channel ID 2
Frequency 31392000 Hz
Ranging Service ID 27
Symbol Rate 2.560 Msym/s
Power Level 37 dBmV

I'm glad this might mean something to you because it is greek to
me :). Thanks again Bob.

I had been expecting to see the remnants of one of those re-boots in the modem
log and the log contents are not consistent with the problem you're describing.
Since I would expect that you would be reporting all this fairly close after one
of the events, I don't expect to see a two week old entry in the log.

My preliminary conclusion is that your modem connection is working just fine,
that's one reason your lights remain normal and these "disconnects" have nothing
to do with your modem connection.

Charter must have some more serious problems or the newsgroup service you use
might be the problem.

Bob

Thanks for all the feedback, I really appreciate the help. Just for
peace of mind I ordered a new modem yesterday and it should be in
today. One thing I noticed is that if i throttle the speed down to
about 1MBs in my newsgroup software it runs perfect right at 1MBs
without any problems. When i take the speed limiter off my download
speed fluctuates between 100k and a little over 1MBs and will then
drop completely as described in my original post. I have 10Mbs
download speed and its been a while since its been working right but i
think i recall getting near 2MBs download speeds.
I have tried using 3 diffrent usenet service providers and I get the
same problem with all(charter limits my connection speed through their
NNTP servers.) I have an easynews.com account and they have a web
interface to browse their binaries and i get the same issues with that
also.
I live in a Condo complex with about 100 units and im not sure how the
cable company drops their cable to my unit but from what im hearing
above it sounds like that might be the problem. Either that or this is
Karma coming back to get me ;). I will check out the things you guys
mentioned above and hopefully get some answers from charter. Ill let
you know what i come up with. Thanks again everyone.

.

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