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New Contributor II
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Chronic Random Disconnection
I've been a Cox internet customer for about two months now and, thus far, it has not been a happy experience. Since the first week of service, I've experienced random disconnects at all hours, anywhere between 2-6+ times a day.
It doesn't matter how many people are using the connection or what time of day it is, the Netgear gateway I bought from Cox loses the connection and resets, seemingly at random. At first I thought I had a bad gateway but, no, it's normal behavior for this unit to restart itself to reset the lost connection.
When it does happen, it seems to happen in clusters. The connection will be good for hours, then go down three times in ten minutes. I did have a Cox tech come out, and he said he replaced a bad splitter outside the apartment and removed a bit of old latex paint from inside the connection in the apartment. I did notice that my SNR dropped below 50, and the connection was rock solid for two hours after he left, when the modem reset itself again.
That was a couple of weeks ago and I can, usually, surf the web without interruption, but hardly an Amazon movie or online game goes by without a modem reset. Here's the event log from my gateway which, for some reason, doesn't seem to record the many, many restarts I've experienced. But there are a few; the critical T-4 and T-3 time outs are representative.
| Wed Mar 19 19:23:58 2014 | Notice (6) | TLV-11 - unrecognized OID;CM-MAC= |
| Tue Mar 18 17:56:24 2014 | Critical (3) | Dynamic NV full - recovery invoked |
| Tue Mar 18 17:25:38 2014 | Critical (3) | Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx.xx.xx.xx.xx.xx;CMTS-MAC=xx.xx.xx.xx.xx.xx;CM-QOS=1.1;CM-VER=3.0; |
| Time Not Established | Warning (5) | DHCP WARNING - Non-critical field invalid in response ;CM-MAC=xx.xx.xx.xx.xx.xx;CMTS-MAC=xx.xx.xx.xx.xx.xx;CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Notice (6) | Honoring MDD; IP provisioning mode = IPv4 |
| Time Not Established | Critical (3) | No Ranging Response received - T3 time-out;CM-MAC=xx.xx.xx.xx.xx.xx;CMTS-MAC=xx.xx.xx.xx.xx.xx;CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | No Ranging Response received - T3 time-out;CM-MAC=xx.xx.xx.xx.xx.xx;CMTS-MAC=xx.xx.xx.xx.xx.xx;CM-QOS=1.0;CM-VER=3.0; |
I left CenturyLink because their DSL was slow and expensive. They were, however, reliable.
ChrisL
Former Moderator
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Miskatonic
New Contributor II
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Chris:
Thank you for the reply. Unfortunately, that's the problem; the connection works fine until it doesn't. I had a disconnect/modem restart event at 20:16 tonight (Mar 22). I had been surfing the internet with no problem for a half hour or so, but within five minutes of starting an online game, the modem restarted. I checked the built-in event log as soon as I could get back online, but the modem had no record of it. Perhaps is -does- need to be replaced. All I know is, sometimes I have two computers, a PS3 and a tablet all connected to the internet, and have no problem and other times, if I try to do anything latency-sensitive like stream video or play an online game, my modem restarts.
To finally answer your question, all the devices in use are wireless. The issue seems to be with the signal coming into the modem, because the wifi signal is always good and strong (until the gateway resets), so the connection type wouldn't seem to matter much.
Thanks again.
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Miskatonic
New Contributor II
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BdC
New Contributor
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ChrisL
Former Moderator
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Accepted Solution
Miskatonic
New Contributor II
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Ok, here's where I admit I was wrong, and apologize to Chris and Tiffany. I was wrong to dismiss the connection type as the source of the problem. I went out and got a 20' ethernet cable and attached my laptop directly to the gateway. I was able to play WoW and stream videos from Amazon for an hour. Then, I disabled the wired connection and connected via wireless. The modem restarted within ten minutes. Per Tiffany's advice, I used a wifi analyzer and saw that my gateway was broadcasting on channel 11, along with a bunch of other access points in my apt. complex. I switched to channel 3, which had much less interference, and was able to play for about a half hour before the modem restarted. I then went back to the wired connection and stayed connected for about six hours with no problem.
SO: My laptop is older. It's the only device in the house that's not 802.11n and, I am guessing, something about the way it connects causes my gateway to crash. As long as it stays on the wired connection, everything is stable. That's good enough for me; it's a big, old, 17" laptop that rarely moves from my desk, so I can live with having it wired. Thanks for all your help.
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