Dynamic Range Window Violation
Hello, I am having issues getting someone to help fix a problem with my internet connection. I receive a Dynamic Range Window Violation in my modem log every few minutes and this greatly affects my internet staying connected and VERY SLOW speeds. I have Cox Gigablast 940MB and speeds are near 50 to 60MB constantly and dropped connection. Modem is brand new and worked find until we switched from 300MB plan to 940MB plan. Here is my error log details from modem event log. This problem has been reported many times and it appears that a "data tech" can be sent to the home to investigate the issue and fix the problem. Please help! Event Log The table below contains the log of events that the SB8200 has detected. This log can be important to the service provider to help diagnose and correct problems, if any should occur. Date Time Event ID Event Level Description 01/27/2020 21:04 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;" 01/27/2020 20:52 67061600 6 "DS profile assignment change. DS Chan ID: 32; Previous Profile: 1 2; New Profile: 1 2 3.;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;" 01/27/2020 20:52 2436694061 5 "Dynamic Range Window violation" 01/27/2020 20:52 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;" 01/27/2020 20:52 2436694061 5 "Dynamic Range Window violation" 01/27/2020 20:52 82001100 5 "RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;" 01/27/2020 20:52 2436694061 5 "Dynamic Range Window violation" 01/27/2020 20:52 82001100 5 "RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;" 01/27/2020 20:52 2436694061 5 "Dynamic Range Window violation" 01/27/2020 20:52 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;" 01/27/2020 20:52 2436694061 5 "Dynamic Range Window violation" 01/27/2020 20:52 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;" 01/27/2020 20:52 67061600 6 "DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2.;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;" 01/27/2020 20:51 73040100 6 "TLV-11 - unrecognized OID;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;" 01/27/2020 20:51 68000300 5 "DHCP WARNING - Non-critical field invalid in response ;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;" 01/01/1970 00:01 2436694066 6 "Honoring MDD; IP provisioning mode = IPv4" 01/01/1970 00:00 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;" 01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;" 01/27/2020 20:50 2436694044 3 "Resetting the cable modem due to docsDevResetNow" 01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;" 01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
Internet drops; zero upload
For the last year, my internet intermittently drops or grinds to a sluggish pace. I have gigablast, have Eero Pro 6 routers all through the house, have an Arris sb8200 modem (which per Cox is compatible and I have used prior versions over the years with no issue). I even bought another Arris sb8200 to see if first one was bad. I have had Cox out to my house at least 6 times in last year to investigate but not one tech can "find the problem" but they tinker with things every time they come. Sometimes it goes out in the morning before work, sometimes midday, sometimes at night. Happens when I am the only one home working or when whole family is home working, streaming, gaming. I am about to lose my mind over this. I have had Cox for almost 15 years and no issues until about a year ago. All the equipment and plan I have I've had for more than a year so to me, it can't be the equipment, and I have the fastest plan. So all signs point to the problem being on Cox's end. But they have checked the street, the outside of the house, the inside of the house, with no solution. If anyone has a suggestion I am all ears. The only thing I don't want to do is get the Panoramic Wifi modem if at all possible. I've never needed it before and prefer not to use it since it is a modem and router and I am happy with my Eero routers and don't want to have to replace them.