Cable modem constantly drops, requires reboot to reconnect
I have a 3 year old ARRIS SURFboard SB6141 DOCSIS 3.0 Cable Modem connected to an Apple Airport Extreme. I previously had issues with the Airport Extreme related to Cox's rollout of IPv6 but I resolved it using the recommended configuration changes, and everything has been fine for nearly a year, when suddenly in the past couple weeks my cable modem has been dropping out at least once a day, up to 5+ times. I've called Cox tech support 4 times already and they upgraded my firmware, but the issue keeps happening. This does not appear to be a router or wifi issue, the router doesn't require a reboot and RSSI values are fine, no configuration changes on that end. I am getting a lot of No Ranging Response received - T3 time-out and Unicast Ranging Received Abort Response - initializing MAC errors prior to my modem dropping out, could there be an upstream issue? They also don't seem to have much to do with when the modem drops; I can't find a correlation between events in the log and the modem going into a borked state. Once the connection drops I'm also unable to reach the router's configuration page via its IP address, though if I hit it right away sometimes it'll load. Logs below. Downstream Bonding Channel Value Channel ID 70 65 66 67 68 69 71 72 Frequency 939000000 Hz 909000000 Hz 915000000 Hz 921000000 Hz 927000000 Hz 933000000 Hz 945000000 Hz 951000000 Hz Signal to Noise Ratio 37 dB 38 dB 38 dB 37 dB 37 dB 37 dB 37 dB 37 dB Downstream Modulation QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 Power Level The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading 7 dBmV 8 dBmV 8 dBmV 8 dBmV 7 dBmV 7 dBmV 6 dBmV 6 dBmV Upstream Bonding Channel Value Channel ID 4 1 2 3 Frequency 17600000 Hz 25800000 Hz 32200000 Hz 38600000 Hz Ranging Service ID 35 35 35 35 Symbol Rate 2.560 Msym/sec 5.120 Msym/sec 5.120 Msym/sec 5.120 Msym/sec Power Level 44 dBmV 45 dBmV 46 dBmV 47 dBmV Upstream Modulation [3] QPSK [2] 16QAM [3] 64QAM [3] 16QAM [3] 64QAM [3] 16QAM [3] 64QAM [3] 16QAM [3] 64QAM Ranging Status Success Success Success Success Signal Stats (Codewords) Bonding Channel Value Channel ID 70 65 66 67 68 69 71 72 Total Unerrored Codewords 412845559 412828812 412854477 412837083 412820649 412821824 412820530 412823289 Total Correctable Codewords 47 5 38 11 42 24 32 27 Total Uncorrectable Codewords 1723 1431 1344 1394 1583 1519 1523 1537 Time Priority Code Message Jan 01 2017 18:52:03 6-Notice I401.0 TLV-11 - unrecognized OID;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Jan 01 2017 18:52:03 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Jan 01 1970 00:00:15 6-Notice N/A Cable Modem Reboot due to power reset ;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0; Jan 01 2017 11:42:40 6-Notice I401.0 TLV-11 - unrecognized OID;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Jan 01 2017 11:42:40 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Jan 01 2017 11:41:54 6-Notice N/A Cable Modem Reboot from Software upgrade ;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Jan 01 2017 11:41:52 6-Notice E111.0 SW download Successful - Via NMS Jan 01 2017 11:40:27 6-Notice E101.0 SW Download INIT - Via NMS Jan 01 2017 11:38:55 6-Notice I401.0 TLV-11 - unrecognized OID;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Jan 01 2017 11:38:55 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Jan 01 1970 00:00:15 6-Notice N/A Cable Modem Reboot due to T4 timeout ;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Jan 01 2017 11:38:11 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Jan 01 2017 11:38:10 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Jan 01 2017 11:37:14 6-Notice I401.0 TLV-11 - unrecognized OID;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Jan 01 2017 11:37:14 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Jan 01 1970 00:00:15 6-Notice N/A Cable Modem Reboot due to power reset ;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Dec 31 2016 21:34:09 6-Notice I401.0 TLV-11 - unrecognized OID;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Dec 31 2016 21:34:09 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0; Jan 01 1970 00:00:15 6-Notice N/A Cable Modem Reboot due to power reset ;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0; Dec 31 2016 18:27:58 6-Notice I401.0 TLV-11 - unrecognized OID;CM-MAC=90:3e:ab:66:f7:e8;CMTS-MAC=bc:16:65:27:85:8a;CM-QOS=1.1;CM-VER=3.0;7.8KViews0likes7Comments