ContributionsMost RecentMost LikesSolutionsDaily Dropped Internet Connection Good morning folks. I have been having an issue with my Cox service for quite sometime. The internet will just "vanish", but the Eth0 & WiFi will continue to work fine. At first, thought it was our router, so purchased a TP-Link AX6000. Still doing the same thing. So, upgraded the router. Cox had mentioned that we would need to upgrade to a DOCSIS v3.1 anyways, so why not. Purchased the CM1000v2 and still having the same results. All the lights stay on and functioning, which is why I originally thought it was the router. Only way to fix it is to power cycle the modem and works fine for a couple days, then same issues all over again. I had Cox Contractor out last month, and he replaced the line from the Ped (only about 10 yards from our house) to the house. Changed the RG-6 fittings on the line that goes in to the house for approx. 5 feet to the modem, straight from the box outside that wall. I had to reboot the modem about an hour ago because the internet vanished again. Here are the details of what the modem connection currently looks like while running. We are on the Cox Gigablast Plan just FYI. Below is the Firmware Info, Connection & Event Logs. Hardware Version 2.02 Firmware Version V6.01.07 Cable Modem Serial Number 5UY10CWSxxxxx CM certificate Installed CM MAC 94:a6:7e:0c:xx:xx Time Priority Description 2022-04-23, 08:28:45 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-04-23, 08:28:26 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-04-23, 08:11:47 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-04-23, 08:10:51 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-04-23, 07:35:50 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-04-23, 07:35:39 Warning (5) Dynamic Range Window violation 2022-04-23, 07:35:39 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-04-23, 07:35:38 Warning (5) Dynamic Range Window violation 2022-04-23, 07:35:38 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-04-23, 07:35:38 Warning (5) Dynamic Range Window violation 2022-04-23, 07:35:38 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-04-23, 07:35:34 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-04-23, 07:35:28 Notice (6) TLV-11 - unrecognized OID;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-04-23, 07:35:28 Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv4 Time Not Established Critical (3) UCD invalid or channel unusable;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1; 2022-04-18, 19:27:10 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-04-18, 19:27:09 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-04-18, 19:27:07 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; Time Not Established Critical (3) UCD invalid or channel unusable;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1; Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; Time Not Established Critical (3) UCD invalid or channel unusable;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1; 2022-03-29, 14:54:04 Critical (3) Resetting the cable modem due to docsDevResetNow Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; Time Not Established Critical (3) UCD invalid or channel unusable;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1; 2022-03-29, 14:50:43 Critical (3) Resetting the cable modem due to docsDevResetNow 2022-03-29, 14:42:18 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-03-29, 14:42:16 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; Time Not Established Critical (3) UCD invalid or channel unusable;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-03-29, 14:25:26 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1; 2022-03-29, 14:25:22 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-03-29, 14:25:05 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-03-29, 14:25:05 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; 2022-03-29, 14:25:01 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=94:a6:7e:0c:xx:xx;CMTS-MAC=00:c1:b1:60:f7:94;CM-QOS=1.1;CM-VER=3.1; Frequency start Value This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect. Starting Frequency <tabindex=-1>Startup Procedure</tabindex=-1> Procedure Status Comment Acquire Downstream Channel 903000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enable BPI+ IP Provisioning Mode Honor MDD IPv4 only <tabindex=-1>Downstream Bonded Channels</tabindex=-1> Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked QAM256 21 903000000 Hz 15.2 dBmV 44.9 dB 179623314 0 0 2 Locked QAM256 1 783000000 Hz 14.1 dBmV 44.8 dB 178836118 0 0 3 Locked QAM256 2 789000000 Hz 14.4 dBmV 44.7 dB 178839710 0 0 4 Locked QAM256 3 795000000 Hz 14.4 dBmV 44.8 dB 178843126 0 0 5 Locked QAM256 4 801000000 Hz 14.5 dBmV 44.6 dB 178846617 0 0 6 Locked QAM256 5 807000000 Hz 14.6 dBmV 44.7 dB 178832958 0 0 7 Locked QAM256 6 813000000 Hz 14.6 dBmV 44.6 dB 178852888 0 0 8 Locked QAM256 7 819000000 Hz 14.5 dBmV 44.7 dB 178858281 0 0 9 Locked QAM256 8 825000000 Hz 14.6 dBmV 44.7 dB 178862070 0 0 10 Locked QAM256 9 831000000 Hz 14.7 dBmV 44.6 dB 178865680 0 0 11 Locked QAM256 10 837000000 Hz 14.7 dBmV 44.8 dB 178869501 0 0 12 Locked QAM256 11 843000000 Hz 14.9 dBmV 44.9 dB 178873239 0 0 13 Locked QAM256 12 849000000 Hz 15.0 dBmV 44.9 dB 178877025 0 0 14 Locked QAM256 13 855000000 Hz 14.9 dBmV 44.8 dB 178880782 0 0 15 Locked QAM256 14 861000000 Hz 14.9 dBmV 44.8 dB 178884915 0 0 16 Locked QAM256 15 867000000 Hz 14.9 dBmV 44.9 dB 178888532 0 0 17 Locked QAM256 16 873000000 Hz 14.8 dBmV 44.7 dB 178892258 0 0 18 Locked QAM256 17 879000000 Hz 14.9 dBmV 44.9 dB 178895685 0 0 19 Locked QAM256 18 885000000 Hz 15.0 dBmV 44.9 dB 178899440 0 0 20 Locked QAM256 19 891000000 Hz 15.0 dBmV 45.0 dB 178903158 0 0 21 Locked QAM256 20 897000000 Hz 15.2 dBmV 44.9 dB 178906915 0 0 22 Locked QAM256 22 909000000 Hz 15.1 dBmV 44.8 dB 178909785 0 0 23 Locked QAM256 23 915000000 Hz 15.1 dBmV 45.0 dB 178914503 0 0 24 Locked QAM256 24 921000000 Hz 15.2 dBmV 44.8 dB 178918163 0 0 25 Locked QAM256 25 927000000 Hz 15.1 dBmV 44.9 dB 178921913 0 0 26 Locked QAM256 26 933000000 Hz 15.1 dBmV 44.8 dB 178925705 0 0 27 Locked QAM256 27 939000000 Hz 15.1 dBmV 44.6 dB 178928403 0 0 28 Locked QAM256 28 945000000 Hz 15.1 dBmV 44.7 dB 178932006 0 0 29 Locked QAM256 29 951000000 Hz 15.0 dBmV 44.7 dB 178935911 0 0 30 Locked QAM256 30 957000000 Hz 15.0 dBmV 44.6 dB 178939168 0 0 31 Locked QAM256 31 963000000 Hz 14.9 dBmV 44.8 dB 178940446 0 0 32 Locked QAM256 32 969000000 Hz 14.9 dBmV 44.7 dB 178959633 0 0 <tabindex=-1>Upstream Bonded Channels</tabindex=-1> Channel Lock Status Modulation Channel ID Frequency Power 1 Locked ATDMA 1 16900000 Hz 38.0 dBmV 2 Locked ATDMA 2 23500000 Hz 38.0 dBmV 3 Locked ATDMA 3 29900000 Hz 38.0 dBmV 4 Locked ATDMA 4 36300000 Hz 37.8 dBmV 5 Locked ATDMA 5 60000000 Hz 38.0 dBmV 6 Locked ATDMA 6 67000000 Hz 38.0 dBmV 7 Locked ATDMA 7 74000000 Hz 38.5 dBmV 8 Locked ATDMA 8 81000000 Hz 39.0 dBmV <tabindex=-1>Downstream OFDM Channels</tabindex=-1> Channel Lock Status Modulation / Profile ID Channel ID Frequency Power SNR / MER Active Subcarrier Number Range Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked 0, 1, 2, 3 159 300000000 Hz 11.6 dBmV 32.8 dB 1108 ~ 2987 95267045 23910586 0 2 Not Locked 0 0 0 Hz 9.3 dBmV 0.0 dB 0 ~ 4095 0 0 0 <tabindex=-1>Upstream OFDMA Channels</tabindex=-1> Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Not Locked Unknown 0 0 Hz 0 dBmV 2 Not Locked Unknown 0 0 Hz 0 dBmV Current System Time:Sat Apr 23 08:41:12 2022 System Up Time:1:06:13