SB5120 & Comcast Woes

SB5120 & Comcast Woes

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Subject Author Date
SB5120 & Comcast Woes mediumhappy 12-18-2006
Posted by mediumhappy on December 18, 2006, 3:51 pm
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L&Gs:

I am a Comcast customer in the Atlanta area. My cable modem service is
down more than it's up and I'm on this ridiculous merry-go-round, where
it goes down, I troubleshoot, it's not a problem on my network, I
reboot the modem, problem still exists, I call Comcast, their tech
makes me do everything over, blames my network for a while, then we
determine it's their problem, they reset the modem, it works for a
while then goes down again, I call them back, they set an appointment
for a tech to visit, the tech shows up, tests everything and it's
working fine, then later that day it's dead again and I start the whole
process over.

Before I give up and get DSL, I am wondering if anyone has knowledge of
a utility that will allow my to monitor the availability of the
internet to my computer through the cable modem and log that
availability to a file, so that I can PROVE to them that it's down more
than it's up. I can see that they've disabled my use of SNMP, so
docsdiag won't work, but I want something a little more sophisticated
than a script that will run pings and log the results to a file.
Ideally, something that will grab the logs from the modem itself, save
them (since there appears to be no way to do that from the Surfboard
management page located at http://192.168.100.1/logs.htm), and then
snapshot the power levels upstream and downstream, etc. A Motorola tech
told me that have something that does exactly that but are prohibited
from making it available to the customers even though many of us own
our own cable modems - they claim their agreements with the cable co's
prevent them from empowering us to do anything that concrete to PROVE
how shitty their service is, and if Motorola breaks that rule the cable
co's will just switch to other modem vendors who WON'T break it.

So there you go. I'm ot a coder and a pretty lousy scripter, so if
anyone can helpme find something that'll do what I need it to do, I'd
really appreciate it. Peace.


Posted by BigJim on December 18, 2006, 4:24 pm
I had similar problems until comcast came out and replaced some lines
between the poles.
It can also be caused by the drop from the pole to the house.

> L&Gs:
>
> I am a Comcast customer in the Atlanta area. My cable modem service is
> down more than it's up and I'm on this ridiculous merry-go-round, where
> it goes down, I troubleshoot, it's not a problem on my network, I
> reboot the modem, problem still exists, I call Comcast, their tech
> makes me do everything over, blames my network for a while, then we
> determine it's their problem, they reset the modem, it works for a
> while then goes down again, I call them back, they set an appointment
> for a tech to visit, the tech shows up, tests everything and it's
> working fine, then later that day it's dead again and I start the whole
> process over.
>
> Before I give up and get DSL, I am wondering if anyone has knowledge of
> a utility that will allow my to monitor the availability of the
> internet to my computer through the cable modem and log that
> availability to a file, so that I can PROVE to them that it's down more
> than it's up. I can see that they've disabled my use of SNMP, so
> docsdiag won't work, but I want something a little more sophisticated
> than a script that will run pings and log the results to a file.
> Ideally, something that will grab the logs from the modem itself, save
> them (since there appears to be no way to do that from the Surfboard
> management page located at http://192.168.100.1/logs.htm), and then
> snapshot the power levels upstream and downstream, etc. A Motorola tech
> told me that have something that does exactly that but are prohibited
> from making it available to the customers even though many of us own
> our own cable modems - they claim their agreements with the cable co's
> prevent them from empowering us to do anything that concrete to PROVE
> how shitty their service is, and if Motorola breaks that rule the cable
> co's will just switch to other modem vendors who WON'T break it.
>
> So there you go. I'm ot a coder and a pretty lousy scripter, so if
> anyone can helpme find something that'll do what I need it to do, I'd
> really appreciate it. Peace.
>



Posted by $Bill on December 18, 2006, 6:02 pm
mediumhappy wrote:

> So there you go. I'm ot a coder and a pretty lousy scripter, so if
> anyone can helpme find something that'll do what I need it to do, I'd
> really appreciate it. Peace.

I use a Perl script to login and read the pages off my Terayon modem.
The pages are different, but the principle should be the same.

Email me without the SPAMOLA and I'll send it to you if you like.
You'll need a recent version of Perl installed (Activestate.com would
be the place to get it).

Posted by Timothy Daniels on December 19, 2006, 12:06 am
"mediumhappy" wrote:
> I am a Comcast customer in the Atlanta area. My cable modem service is
> down more than it's up and I'm on this ridiculous merry-go-round, where
> it goes down, I troubleshoot, it's not a problem on my network, I
> reboot the modem, problem still exists, I call Comcast, their tech
> makes me do everything over, blames my network for a while, then we
> determine it's their problem, they reset the modem, it works for a
> while then goes down again, I call them back, they set an appointment
> for a tech to visit, the tech shows up, tests everything and it's
> working fine, then later that day it's dead again and I start the whole
> process over.


I'm having similar problems as an ex-Comcast customer with
Time Warner, but I'm still on the Comcast infrastructure. The modem
web page AND Tier 3 interrogations to the modem show a low receive
signal level (modem reports 15 dBmV) and tracerts show timeouts at
various random nodes. The signal-to-noise-ratio is 30-34 dB. So
what do they do? They try swapping modems and tightening cable
connectors. Meanwhile, multiple cable TV subscribers and internet
subscribers in the building are experiencing picture blocking and
dropped connections and "slow surfing". It's not until I paid an
unscheduled visit to TimeWarner's local warehous/field ops depot
and spoke with the regional field ops supervisor did I get any action -
"linemen" are coming out tomorrow to check the neighborhood
curbside amplifier vault and the building's amplifier for signal levels.
Until I went into their own turf to rattle their office doors did I get any
attention from them that this might be THEIR problem. My impression
from days on the phone with reps at various levels, including local
offices, is that the transition from Comcast/Adelphia is not going well,
and the techs have been swamped with calls. As a result, the feeling
there is that if you get any communication at all, you're lucky, and
they're not going to send out the big guns for "blocking" or "slow sufing".

Fortunately for us, people in our building are getting good service
from DSLextreme and from DirecTV, so we're not locked into the
"Cable Company". We can and will walk if this doesn't get fixed.

BTW, if you own your SB5120, chain it down. The database given
to Time Warner by Comcast shows that the modem I had "belongs to
Comcast" although I returned their Sharkfin modem a year ago and they
haven't billed me for a modem since then. When the Time Warner rep
tried to leave with it last week, I snarled without looking up from the
monitor screen "That modem's not going to leave this room!", and he
gave it back.

*TimDaniels*

Posted by Ed Nielsen on December 19, 2006, 9:41 am
15dBmV at the downstream is pretty high. I would sure like to see that
down below 0. What is your transmit level?


CIAO!

Ed N.

Timothy Daniels wrote:
> The modem web page AND Tier 3 interrogations to the modem show a
> low receive signal level (modem reports 15 dBmV)

> *TimDaniels*

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other useful resources:
The Federal Communications Commission (FCC)
Telecommunications Industry Association
Electronic and Software Security Products and Services
International Telecommunication Union

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