Router (CGM4140COM) not properly negotiating 1000mbps link speeds with Ethernet connected devices.
Devices seem to keep negotiating 100mbps link speeds when they are gigabit capable. Problem only started to occur for the past month or so. Current fix is to just replug/restart the networked devices until it properly negotiates to gigabit link speeds. Have one device hardwired with a CAT6 cable, and two others via a switch (Tenda SG105)
Internet is not stable - Cox recommended replacing modem still having issues
The whole house started dropping 12/28 at about 4pm. The router is an AC1750 Archer C7 v1 (bought 2014) the modem was a SB6141(bought 2013) but Cox recommended replacing it so I did - to a SB6183. I have a new router arriving tomorrow, so maybe it's the C7 but the modem has some interesting log data below - I removed the MAC address. I also added the signal data as well. Can anyone help as Cox is scheduled to test the node but it's going to cost $75. Is there a way I can test? Thank you in advance for any recommendations. Time Priority Description Wed Jan 02 01:24:35 2019 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0; Wed Jan 02 01:23:48 2019 Notice (6) TLV-11 - unrecognized OID;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0; Time Not Established Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC=;CMTS-MAC=;CM-QOS=1.0;CM-VER=3.0; Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv4 Mon Dec 31 15:16:54 2018 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.0; Mon Dec 31 15:15:29 2018 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=;CMTS-MAC=;CM-QOS=1.0;CM-VER=3.0; Here are the signals. Status The statuses listed show the connection state of the cable modem. They are used by your service provider to evaluate the operation of the cable modem. Startup Procedure Procedure Status Comment Acquire Downstream Channel Locked Connectivity State OK Operational Boot State OK Operational Configuration File OK Security Enabled BPI+ DOCSIS Network Access Enabled Allowed Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR Corrected Uncorrectables 1 Locked QAM256 2 789000000 Hz -5.9 dBmV 40.0 dB 368 85 2 Locked QAM256 1 783000000 Hz -6.7 dBmV 39.9 dB 7351 26263 3 Locked QAM256 3 795000000 Hz -7.0 dBmV 39.7 dB 367 196 4 Locked QAM256 4 801000000 Hz -8.7 dBmV 39.3 dB 363 39 5 Locked QAM256 5 807000000 Hz -8.4 dBmV 39.3 dB 434 364 6 Locked QAM256 6 813000000 Hz -7.3 dBmV 39.6 dB 291 45 7 Locked QAM256 7 819000000 Hz -6.8 dBmV 39.8 dB 298 31 8 Locked QAM256 8 825000000 Hz -7.2 dBmV 39.7 dB 235 62 9 Locked QAM256 17 879000000 Hz -8.2 dBmV 39.3 dB 268 28 10 Locked QAM256 18 885000000 Hz -8.1 dBmV 39.5 dB 295 33 11 Locked QAM256 19 891000000 Hz -9.2 dBmV 39.3 dB 186 14 12 Locked QAM256 20 897000000 Hz -9.7 dBmV 39.2 dB 248 18 13 Locked QAM256 21 903000000 Hz -9.4 dBmV 39.3 dB 18132 17011 14 Locked QAM256 22 909000000 Hz -9.9 dBmV 39.0 dB 36864 41259 15 Locked QAM256 23 915000000 Hz -10.5 dBmV 38.8 dB 861 3040 16 Locked QAM256 24 921000000 Hz -10.2 dBmV 38.9 dB 1005 3666 Upstream Bonded Channels Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 2 5120 Ksym/sec 23500000 Hz 44.5 dBmV 2 Locked ATDMA 1 5120 Ksym/sec 16900000 Hz 44.4 dBmV 3 Locked ATDMA 3 5120 Ksym/sec 29900000 Hz 45.9 dBmV 4 Locked ATDMA 4 5120 Ksym/sec 36300000 Hz 46.5 dBmV