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Forum Discussion
CM500 connectivity issues - Cox has no advice - log shows variety of critical errors
Hello, I have been having problems with freqent internmittent Internet connectivity for weeks. I have a CM500-100NAS modem and an Orbi router with satellite. The modem frequently shows either blink...
you have a lot of errors and issues with your line. You need to get your isp to check the line.
Hello plemans Since my last post, 3 separate Cox techs have visited on 3 consecutive days. The wiring among 4 houses all seems to be intermingled and having problems. Another service call is scheduled for today. My next door neighbor still has no service at all, although mine has improved. I now have all my up and downstream channels locked.
Attached is a snippit of the dashboard. We still have short periods of buffering. I heard from one of the Cox people that I still ought to replace my modem. Is he correct? The other 3 didn't mention this. My error log now only repeatedly shows this error and warning Can you please explain what this means? Thank you so much for your help and advice!
| 2020-3-25, 01:31:08 | Critical (3) | Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=a0:04:60:c0:d2:a0;CMTS-MAC=00:bc:60:92:54:e9;CM-QOS=1.1;CM-VER=3.0; |
| 2020-3-25, 01:31:08 | Warning (5) | Dynamic Range Window violation |
You still have quite a few errors on your line.
the logs usually reference an issue contacting back to the cmts (isp connection basically)
The cm500 is a decent modem. I'd have cox get your line issues fixed first before replacing it.
Unless you plan on upgrading to gigabit :) Then you need a docsis 3.1 modem.