CM3000 Cable Modem Upload Stream Issues

Question

I have had Cox communications to my house several times in the past month and a half. They've replaced all the cable connections both in and out of my house. I have 2 gig download 100+MBPS upload. The download is fine, the upload will not go past 40 MBPS no matter what we try. He checked the speed without using the modem and he was getting 113 mbps uploads. Once connected to the cable modem, 39-40 if I'm lucky. This modem is less than 5 months old.

I can't see any settings in the UI to adjust. Keep in mind this was working fine until recently.

FURRYe38 · Answer

What Firmware version is currently loaded?Please post a copy and paste of the modems connection status and event log page.https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-router
https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-router
&nbsp;

Punster · Answer

Firmware version is 6.01.03&nbsp;&nbsp;Connections Status&nbsp;Cable DiagnosticStatus: GoodAction:Your setup looks fine. If you can't access the internet, make sure you properly activated the modem. If modem has been activated and you still can't access the internet, contact your service provider for troubleshooting help.If you can access the internet but has other internet issue, the Netgear Cable Knowledge Base can provide additional troubleshooting info.CM Status: GoodDownstream Status: Good&nbsp; &nbsp; Downstream Power Level: Good&nbsp; &nbsp; Downstream SNR Level: GoodUpstream Status: Good&nbsp; &nbsp; Upstream Power Level: GoodCurrent Time: Fri Sep 12 06:22:17 2025Startup ProcedureAcquire Downstream Channel: 759000000 Hz &nbsp;LockedConnectivity State: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;OK &nbsp; &nbsp; &nbsp; OperationalBoot State: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;OK &nbsp; &nbsp; &nbsp; OperationalSecurity: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Enabled &nbsp; BPI+IP Provisioning Mode: &nbsp; &nbsp; &nbsp; Honor MDD &nbsp; IPv4 onlyDownstream Bonded ChannelsChannel LockedStatus Modulation ChannelID &nbsp;Frequency &nbsp; &nbsp; Power &nbsp; &nbsp;SNR &nbsp; Correctables Uncorrectables &nbsp; &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 1 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; &nbsp;5 &nbsp; &nbsp; 759000000 Hz &nbsp; &nbsp; -0.5 &nbsp; &nbsp; 42.7 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; 2 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; &nbsp;1 &nbsp; &nbsp; 735000000 Hz &nbsp; &nbsp; -0.3 &nbsp; &nbsp; 43.1 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; 3 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; &nbsp;2 &nbsp; &nbsp; 741000000 Hz &nbsp; &nbsp; -0.5 &nbsp; &nbsp; 42.9 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; 4 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; &nbsp;3 &nbsp; &nbsp; 747000000 Hz &nbsp; &nbsp; -0.4 &nbsp; &nbsp; 42.9 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; 5 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; &nbsp;4 &nbsp; &nbsp; 753000000 Hz &nbsp; &nbsp; -0.5 &nbsp; &nbsp; 42.8 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; 6 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; &nbsp;6 &nbsp; &nbsp; 765000000 Hz &nbsp; &nbsp; -0.8 &nbsp; &nbsp; 42.7 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; 7 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; &nbsp;7 &nbsp; &nbsp; 771000000 Hz &nbsp; &nbsp; -0.9 &nbsp; &nbsp; 42.6 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; 8 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; &nbsp;8 &nbsp; &nbsp; 777000000 Hz &nbsp; &nbsp; -0.9 &nbsp; &nbsp; 42.6 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; 9 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; &nbsp;9 &nbsp; &nbsp; 783000000 Hz &nbsp; &nbsp; -1 &nbsp; &nbsp; 42.5 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;10 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 10 &nbsp; &nbsp; 789000000 Hz &nbsp; &nbsp; -1.1 &nbsp; &nbsp; 42.4 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;11 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 11 &nbsp; &nbsp; 795000000 Hz &nbsp; &nbsp; -1.3 &nbsp; &nbsp; 42.3 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;12 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 12 &nbsp; &nbsp; 801000000 Hz &nbsp; &nbsp; -1.1 &nbsp; &nbsp; 42.1 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;13 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 13 &nbsp; &nbsp; 807000000 Hz &nbsp; &nbsp; -1.3 &nbsp; &nbsp; 42.1 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;14 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 14 &nbsp; &nbsp; 813000000 Hz &nbsp; &nbsp; -1.3 &nbsp; &nbsp; 42 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;15 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 15 &nbsp; &nbsp; 819000000 Hz &nbsp; &nbsp; -1.2 &nbsp; &nbsp; 42 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;16 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 16 &nbsp; &nbsp; 825000000 Hz &nbsp; &nbsp; -1.2 &nbsp; &nbsp; 42.1 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;17 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 17 &nbsp; &nbsp; 831000000 Hz &nbsp; &nbsp; -1.1 &nbsp; &nbsp; 42.1 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;18 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 18 &nbsp; &nbsp; 837000000 Hz &nbsp; &nbsp; -1.1 &nbsp; &nbsp; 42.1 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;19 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 19 &nbsp; &nbsp; 843000000 Hz &nbsp; &nbsp; -1.1 &nbsp; &nbsp; 42.1 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;20 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 20 &nbsp; &nbsp; 849000000 Hz &nbsp; &nbsp; -0.9 &nbsp; &nbsp; 42.2 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;21 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 21 &nbsp; &nbsp; 855000000 Hz &nbsp; &nbsp; -1.2 &nbsp; &nbsp; 42.1 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;22 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 22 &nbsp; &nbsp; 861000000 Hz &nbsp; &nbsp; -1.2 &nbsp; &nbsp; 42.1 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;23 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 23 &nbsp; &nbsp; 867000000 Hz &nbsp; &nbsp; -1.5 &nbsp; &nbsp; 42 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;24 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 24 &nbsp; &nbsp; 873000000 Hz &nbsp; &nbsp; -1.3 &nbsp; &nbsp; 41.9 &nbsp; &nbsp; 0 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;25 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 41 &nbsp; &nbsp; 213000000 Hz &nbsp; &nbsp; 0.6 &nbsp; &nbsp; 44 &nbsp; &nbsp; 2 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;26 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 42 &nbsp; &nbsp; 219000000 Hz &nbsp; &nbsp; 0.5 &nbsp; &nbsp; 44 &nbsp; &nbsp; 3 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;27 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 43 &nbsp; &nbsp; 225000000 Hz &nbsp; &nbsp; 0.3 &nbsp; &nbsp; 44 &nbsp; &nbsp; 1 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;28 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 44 &nbsp; &nbsp; 231000000 Hz &nbsp; &nbsp; 0.2 &nbsp; &nbsp; 43.8 &nbsp; &nbsp; 1 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;29 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 45 &nbsp; &nbsp; 237000000 Hz &nbsp; &nbsp; 0.2 &nbsp; &nbsp; 39.2 &nbsp; &nbsp; 1 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;30 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 46 &nbsp; &nbsp; 243000000 Hz &nbsp; &nbsp; 0.2 &nbsp; &nbsp; 38.2 &nbsp; &nbsp; 470710 &nbsp; &nbsp; 165&nbsp; &nbsp; &nbsp;31 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 47 &nbsp; &nbsp; 249000000 Hz &nbsp; &nbsp; 0.2 &nbsp; &nbsp; 38 &nbsp; &nbsp; 38 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp;32 &nbsp; &nbsp; Locked &nbsp; &nbsp; QAM256 &nbsp; &nbsp; 48 &nbsp; &nbsp; 255000000 Hz &nbsp; &nbsp; 0.1 &nbsp; &nbsp; 43.6 &nbsp; &nbsp; 4 &nbsp; &nbsp; 0Upstream Bonded ChannelsChannel &nbsp; LockedStatus &nbsp;ChannelType ChannelID &nbsp; SymbolRate &nbsp; &nbsp; &nbsp; &nbsp;Frequency &nbsp; &nbsp; &nbsp; Power &nbsp; &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 1 &nbsp; &nbsp; &nbsp; Locked &nbsp; &nbsp; &nbsp; ATDMA &nbsp; &nbsp; &nbsp;1 &nbsp; &nbsp; &nbsp; 5120 Ksym/sec &nbsp; &nbsp; &nbsp; 16900000 Hz &nbsp; &nbsp; &nbsp; 42.8 dBmV&nbsp; &nbsp; &nbsp; 2 &nbsp; &nbsp; &nbsp; Locked &nbsp; &nbsp; &nbsp; ATDMA &nbsp; &nbsp; &nbsp;2 &nbsp; &nbsp; &nbsp; 5120 Ksym/sec &nbsp; &nbsp; &nbsp; 23500000 Hz &nbsp; &nbsp; &nbsp; 42.8 dBmV&nbsp; &nbsp; &nbsp; 3 &nbsp; &nbsp; &nbsp; Locked &nbsp; &nbsp; &nbsp; ATDMA &nbsp; &nbsp; &nbsp;3 &nbsp; &nbsp; &nbsp; 5120 Ksym/sec &nbsp; &nbsp; &nbsp; 29900000 Hz &nbsp; &nbsp; &nbsp; 42.8 dBmV&nbsp; &nbsp; &nbsp; 4 &nbsp; &nbsp; &nbsp; Locked &nbsp; &nbsp; &nbsp; ATDMA &nbsp; &nbsp; &nbsp;4 &nbsp; &nbsp; &nbsp; 5120 Ksym/sec &nbsp; &nbsp; &nbsp; 36300000 Hz &nbsp; &nbsp; &nbsp; 43.3 dBmV&nbsp; &nbsp; &nbsp; 5 &nbsp; &nbsp; &nbsp; Not Locked &nbsp; &nbsp; &nbsp; Unknown &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp; &nbsp; 0 &nbsp; &nbsp; &nbsp; 0 &nbsp; &nbsp; &nbsp; 0.0&nbsp; &nbsp; &nbsp; 6 &nbsp; &nbsp; &nbsp; Not Locked &nbsp; &nbsp; &nbsp; Unknown &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp; &nbsp; 0 &nbsp; &nbsp; &nbsp; 0 &nbsp; &nbsp; &nbsp; 0.0&nbsp; &nbsp; &nbsp; 7 &nbsp; &nbsp; &nbsp; Not Locked &nbsp; &nbsp; &nbsp; Unknown &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp; &nbsp; 0 &nbsp; &nbsp; &nbsp; 0 &nbsp; &nbsp; &nbsp; 0.0&nbsp; &nbsp; &nbsp; 8 &nbsp; &nbsp; &nbsp; Not Locked &nbsp; &nbsp; &nbsp; Unknown &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp; &nbsp; 0 &nbsp; &nbsp; &nbsp; 0 &nbsp; &nbsp; &nbsp; 0.0Downstream OFDM ChannelsChannel &nbsp; LockedStatus &nbsp;ProfileID &nbsp;ChannelID &nbsp; &nbsp;Frequency &nbsp; &nbsp; &nbsp; Power &nbsp; &nbsp; &nbsp; SNR/MER &nbsp; &nbsp;ActiveSubcarrier &nbsp; &nbsp;Unerror &nbsp; &nbsp;Correctable &nbsp; Uncorrectable&nbsp; &nbsp; &nbsp; 1 &nbsp; &nbsp; Locked &nbsp; &nbsp; 0 ,1 ,2 ,3 &nbsp; &nbsp; 159 &nbsp; &nbsp; 300000000 Hz &nbsp; &nbsp; -0.22 dBmV &nbsp; &nbsp; 43.4 dB &nbsp; &nbsp; 296 ~ 7895 &nbsp; &nbsp; 444807898 &nbsp; &nbsp; 233749043 &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; 2 &nbsp; &nbsp; Locked &nbsp; &nbsp; 0 ,1 ,2 ,3 &nbsp; &nbsp; 160 &nbsp; &nbsp; 918000000 Hz &nbsp; &nbsp; -0.12 dBmV &nbsp; &nbsp; 42.0 dB &nbsp; &nbsp; 2216 ~ 5975 &nbsp; &nbsp; 591000640 &nbsp; &nbsp; 142733067 &nbsp; &nbsp; 1Upstream OFDMA ChannelsChannel &nbsp; LockedStatus &nbsp; &nbsp;ProfileID &nbsp; &nbsp;ChannelID &nbsp; &nbsp;Frequency &nbsp; &nbsp; &nbsp; Power&nbsp; &nbsp; &nbsp; 1 &nbsp; &nbsp; Locked &nbsp; &nbsp; 9 ,13 &nbsp; &nbsp; &nbsp;6 &nbsp; &nbsp; 36800000 Hz &nbsp; &nbsp; 39.0 dBmV&nbsp; &nbsp; &nbsp; 2 &nbsp; &nbsp; Not Locked &nbsp; &nbsp; 0 &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp; 0 Hz &nbsp; &nbsp; 0 dBmVEvent Log&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Time &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Priority &nbsp; &nbsp; DescriptionThu Sep 11 21:50:21 2025 &nbsp; &nbsp; Notice (6) &nbsp; &nbsp; US profile assignment change. US Chan ID: 6; Previous Profile: 13; New Profile: 9 13.;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 21:49:32 2025 &nbsp; &nbsp; Warning (5) &nbsp; &nbsp; Dynamic Range Window violationThu Sep 11 21:49:32 2025 &nbsp; &nbsp; Warning (5) &nbsp; &nbsp; RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 21:49:26 2025 &nbsp; &nbsp; Notice (6) &nbsp; &nbsp; DS profile assignment change. DS Chan ID: 33; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 21:49:24 2025 &nbsp; &nbsp; Notice (6) &nbsp; &nbsp; DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 21:49:19 2025 &nbsp; &nbsp; Notice (6) &nbsp; &nbsp; TLV-11 - unrecognized OID;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Warning (5) &nbsp; &nbsp; DHCP WARNING - Non-critical field invalid in response ;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Notice (6) &nbsp; &nbsp; Honoring MDD; IP provisioning mode = IPv4Time Not Established &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 19:28:09 2025 &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 15:24:41 2025 &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; DHCP FAILED - Discover sent, no offer received;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 12:26:20 2025 &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 12:26:16 2025 &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;Time Not Established &nbsp; &nbsp; Critical (3) &nbsp; &nbsp; SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;&nbsp;&nbsp;Event Log&nbsp;Clear Log&nbsp;Refresh&nbsp;Export&nbsp;TimePriorityDescriptionThu Sep 11 21:50:21 2025(Notice (6))US profile assignment change. US Chan ID: 6; Previous Profile: 13; New Profile: 9 13.;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 21:49:32 2025(Warning (5))Dynamic Range Window violationThu Sep 11 21:49:32 2025(Warning (5))RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 21:49:26 2025(Notice (6))DS profile assignment change. DS Chan ID: 33; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 21:49:24 2025(Notice (6))DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 21:49:19 2025(Notice (6))TLV-11 - unrecognized OID;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Time Not Established(Warning (5))DHCP WARNING - Non-critical field invalid in response ;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Time Not Established(Notice (6))Honoring MDD; IP provisioning mode = IPv4Time Not Established(Critical (3))No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;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=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 19:28:09 2025(Critical (3))No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;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=54:07:7d:c4:c0:98;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=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;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=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 15:24:41 2025(Critical (3))Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;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=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;Time Not Established(Critical (3))DHCP FAILED - Discover sent, no offer received;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;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=54:07:7d:c4:c0:98;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=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;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=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 12:26:20 2025(Critical (3))No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Thu Sep 11 12:26:16 2025(Critical (3))No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;CM-QOS=1.1;CM-VER=3.1;Time Not Established(Critical (3))No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:c4:c0:98;CMTS-MAC=6c:13:d5:21:a5:d6;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=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;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=54:07:7d:c4:c0:98;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;&nbsp;&nbsp;Help CenterShow/Hide Help Center&nbsp;

FURRYe38 · Answer

Ok, so there is a known issue with FW v6 on these modems. NG is aware of it. You'll need to contact the ISP and have them revert the FW back to prior v5 or what ever they had been using before v6 FW was loaded on it and there the only ones that can load FW on user modems. CC/XF have already been reverting there users back for this model modem. After reverting, modems are working.&nbsp;
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After that, check the event logs page again. Currently theres too many criticals and warnings that the ISP needs to resolve. However check again after v5 FW is loaded back on by the ISP. If you still see issues there with criticals, errors and warnings, have the ISP check all up to the modem.&nbsp;
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The cable connections log and data looks good. No issues there.&nbsp;
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Punster · Answer

&nbsp;Thanks for the info.&nbsp; I don't believe Cox does firmware updates on modems they didn't sell correct?&nbsp; Can I obtain a version of the firmware to apply?&nbsp;&nbsp;

FURRYe38 · Answer

You'll need to ask them that. Ask for escalated support from the ISP. They should be aware of this issue as NG has been working with the ISPs about this v6 version. There all needing to downgrade until the v6 FW issue is fixed. Zero idea when that will be.
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ALL ISPs handle cable modem FW updates. There is not user path for updating cable modem FW. Been like this for years. ISPs control all of that.&nbsp;

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CM3000 Cable Modem Upload Stream Issues

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