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Message |
Mikal448
Guest
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 Posted:
Mon Sep 26, 2005 12:36 am Post subject:
Dieing Cable Modem? |
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For the past couple of months I've had some serious trouble with m
cable modem. The modem is a Toshiba PCX1100U model and is about 4-
years old. What's been happening is seemingly random connectio
drops. It sometimes happens every 15 minutes, sometimes th
connection will remain stable for hours. I've had my ISP, Cox Cable
come out twice now, they have been unable to verify what the proble
is.
I personally believe the cable modem has just about had it. I hav
heard this possibility from a Cox Tech support representative a
well. Does this sound like a viable reason for these rando
connection drops |
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Quaoar
Guest
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| Posted:
Mon Sep 26, 2005 3:02 am Post subject:
Re: Dieing Cable Modem? |
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"Mikal448" <Hybrid449@hotmail-dot-com.no-spam.invalid> wrote in message
news:B_CZe.108744$1v5.54581@fe03.news.easynews.com...
| Quote: | For the past couple of months I've had some serious trouble with my
cable modem. The modem is a Toshiba PCX1100U model and is about 4-5
years old. What's been happening is seemingly random connection
drops. It sometimes happens every 15 minutes, sometimes the
connection will remain stable for hours. I've had my ISP, Cox Cable,
come out twice now, they have been unable to verify what the problem
is.
I personally believe the cable modem has just about had it. I have
heard this possibility from a Cox Tech support representative as
well. Does this sound like a viable reason for these random
connection drops?
|
What does the modem diagnostic page http://192.168.100.1 show for signal
levels? How do you know it is the modem disconnecting? What do the
operating LEDs do when you have a drop?
Q |
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Marc
Guest
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| Posted:
Mon Sep 26, 2005 4:20 pm Post subject:
Re: Dieing Cable Modem? |
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"Mikal448" <Hybrid449@hotmail-dot-com.no-spam.invalid> wrote in message
news:B_CZe.108744$1v5.54581@fe03.news.easynews.com...
| Quote: | For the past couple of months I've had some serious trouble with my
cable modem. The modem is a Toshiba PCX1100U model and is about 4-5
years old. What's been happening is seemingly random connection
drops. It sometimes happens every 15 minutes, sometimes the
connection will remain stable for hours. I've had my ISP, Cox Cable,
come out twice now, they have been unable to verify what the problem
is.
I personally believe the cable modem has just about had it. I have
heard this possibility from a Cox Tech support representative as
well. Does this sound like a viable reason for these random
connection drops?
|
I can't tell from the header what region you're in, but you should be
aware that Cox Cable is upgrading their system and that upgrade can
cause the symptoms you have reported.
Use the Cox news server and check the newsgroup for your area:
http://support.cox.com/sdccommon/asp/contentredirect.asp
The upgrade takes the Preferred service from 4000/512 to 5000/2000 and
the Premier service from 5000/768 to 15000/2000. If this is the case,
the solution is to replace your modem with a DOCSIS 2.0 modem such as
the Motorola SB5100.
http://www.newegg.com/Product/Product.asp?Item=N82E16825122104 |
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Mikal448
Guest
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| Posted:
Tue Sep 27, 2005 8:20 am Post subject:
Re: Dieing Cable Modem? |
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| Quote: | Quaoarwrote:
"Mikal448" <Hybrid449@hotmail-dot-com.no-spam.invalid> wrote in |
message
| Quote: | news:B_CZe.108744$1v5.54581@fe03.news.easynews.com...
For the past couple of months I've had some serious trouble with my
cable modem. The modem is a Toshiba PCX1100U model and is about 4-5
years old. What's been happening is seemingly random connection
drops. It sometimes happens every 15 minutes, sometimes the
connection will remain stable for hours. I've had my ISP, Cox
Cable,
come out twice now, they have been unable to verify what the
problem
is.
I personally believe the cable modem has just about had it. I have
heard this possibility from a Cox Tech support representative as
well. Does this sound like a viable reason for these random
connection drops?
What does the modem diagnostic page http://192.168.100.1 show for |
signal
levels? How do you know it is the modem disconnecting? What do the
operating LEDs do when you have a drop?
Q[/quote:374ad57e10]
That diagnostic link doesn't work for me, it says operation timed out.
I'm using a linksys router. The cable LED on the cable modem goes out,
and will most of the time stay out for about 15-20 minutes.
It seems that the cable modem can't hold a signal. |
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NickySantoro
Guest
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| Posted:
Tue Sep 27, 2005 4:20 pm Post subject:
Re: Dieing Cable Modem? |
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On Sun, 25 Sep 2005 19:36:02 GMT,
Hybrid449@hotmail-dot-com.no-spam.invalid (Mikal448) wrote:
| Quote: | For the past couple of months I've had some serious trouble with my
cable modem. The modem is a Toshiba PCX1100U model and is about 4-5
years old. What's been happening is seemingly random connection
drops. It sometimes happens every 15 minutes, sometimes the
connection will remain stable for hours. I've had my ISP, Cox Cable,
come out twice now, they have been unable to verify what the problem
is.
I personally believe the cable modem has just about had it. I have
heard this possibility from a Cox Tech support representative as
well. Does this sound like a viable reason for these random
connection drops?
|
I had the same problem. It was intermittent and random. By trial and
error finally tracked it down to the coax running from the modem to
the splitter on the incoming line. Changed the coax and the problem
vanished.
FWIW
YMMV
DFB |
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Mikal448
Guest
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| Posted:
Tue Sep 27, 2005 11:34 pm Post subject:
Re: Dieing Cable Modem? |
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The Cox cable rep that came out to my home replaced the coax runnin
from the modem to the splitter as well, with no noticeable results
I've ordered a Motorola cable modem, I guess i'll see if it's th
modem itself or not |
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Quaoar
Guest
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| Posted:
Thu Sep 29, 2005 4:58 am Post subject:
Re: Dieing Cable Modem? |
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Mikal448 wrote:
| Quote: | The Cox cable rep that came out to my home replaced the coax running
from the modem to the splitter as well, with no noticeable results.
I've ordered a Motorola cable modem, I guess i'll see if it's the
modem itself or not.
|
OK, but what did the tech say about signal levels? He should have
diagnosed the line while he was there. I do think that if you cannot
access the modem status page that there is a problem with the modem.
Can you access the modem stastus page if you take the router out of the
system (reboot the modem before starting any computers!)?
Q |
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Mikal448
Guest
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| Posted:
Thu Sep 29, 2005 1:33 pm Post subject:
Re: Dieing Cable Modem? |
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Upon installing my new motorola cable modem the problem was fixed
Turns out my old router had just had it : |
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Jon
Guest
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| Posted:
Mon Oct 17, 2005 4:20 pm Post subject:
Re: Dieing Cable Modem? |
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Next time you call in ask the rep what your "Flap" report reads. This
is the report that tells when the modem looses and regains sync, and
how many times it does this. Also look at your modem log page and look
for periods when the modem suddenly shuts down the downstream for no
reason, e.g. there were no entires where it said "LOST TRC SYNC --
TRYING TO RECOVER".
Five years is a long time, especially for an early generation cable
modem. It's likely the RF tuner simply got old and can no longer
deliver a clear enough signal. |
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Guest
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| Posted:
Sat Oct 29, 2005 11:41 pm Post subject:
Re: Dieing Cable Modem? |
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I've got a Linksys with similar problems:
System Information
This page provides the basic information about your cable modem.
Standard Specification Compliant DOCSIS 1.0
Hardware Version 3.0
Software Version 1.0.4 Release 2 (befcmu10v104r2e.bin)
The Comcast tech said I needed DOCSIS 1.1 or higher which the version 3
supports 1.1 AND 2.0. Linksys said that Comcast needed to "give me the
higher version" and the Comcast tech said that they couldn't download
the upgrade to my modem.
They were upgrading my system about 2 months ago and the levels were
too high around +20 (now +8) and the SNR was under 30 when it would
drop (now 37). the ping to their office was 10 ms with no packet loss.
What am I looking for in the Flap report? Will it tell whether it's my
modem or their lines that causes the synch loss?
If my modem is capable of DOCSIS 1.1 or 2.0, how do I turn it on or
enable in in the modem?
Thanks.
Here's the latest log page.
Time Priority Description
1999-10-05 00:01:30 information Scan Downstream Frequency...
1999-10-05 00:01:34 information Sync recovery loop is locked
1999-10-05 00:01:52 information Beginning ranging process. Initial
Power=26.00 dBmV
1999-10-05 00:01:37 information Got a map with the new UCD change
count, and changed upstream parms
1999-10-05 00:01:45 critical No Ranging Response received -T3 time-out
1999-10-05 00:02:00 debug DHCP_coldstart() successfully
1999-10-05 00:02:00 information DHCP: IP complete
2005-10-29 13:02:42 information Processing Configuration File
2005-10-29 13:02:42 information Sending Registration Request
2005-10-29 13:02:43 information Received REG-RSP from CMTS
2005-10-29 13:02:43 information Locked Plan ID : 0 , Locked Frequency =
699000000 Hz
2005-10-29 13:02:43 notice Cable Modem Status set to Registration
Complete
2005-10-29 13:02:45 information Authorized
2005-10-29 13:02:45 notice CM RF interface LinkUp
2005-10-29 13:02:42 information Scan Downstream Frequency...
2005-10-29 13:02:47 information Sync recovery loop is locked
2005-10-29 13:02:49 information Beginning ranging process. Initial
Power=44.00 dBmV
2005-10-29 13:02:49 information Got a map with the new UCD change
count, and changed upstream parms
2005-10-29 13:02:53 debug DHCP_coldstart() successfully
2005-10-29 13:02:54 information DHCP: IP complete
2005-10-29 13:13:11 information Processing Configuration File
2005-10-29 13:13:11 information Sending Registration Request
2005-10-29 13:13:11 information Received REG-RSP from CMTS
2005-10-29 13:13:11 notice Cable Modem Status set to Registration
Complete
2005-10-29 13:13:13 information Authorized
2005-10-29 13:13:13 notice CM RF interface LinkUp |
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