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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
|
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; |