Causes service interruptions and angry family. Modem ARRIS SURFboard SB6141. Please help!
What do the modem's signal stats look like ? Try getting them here; http://192.168.100.1
Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
Power Level
| 6 dBmV | 3 dBmV | 3 dBmV | 3 dBmV | 3 dBmV | 3 dBmV | 4 dBmV | 4 dBmV |
Upstream:
Power Level | 45 dBmV | 44 dBmV | 45 dBmV | 52 dBmV |
Signal to Noise Ratio | 37 dB | 38 dB | 38 dB | 39 dB | 39 dB | 39 dB | 39 dB | 39 dB |
Time Priority Code Message
Sep 30 2020 11:41:59 | 3-Critical | R02.0 | No Ranging Response received - T3 time-out;CM-MAC=90:3e:ab:88:26:35;CMTS-MAC=00:01:5c:b1:ae:73;CM-QOS=1.1;CM-VER=3.0; |
Sep 30 2020 11:37:33 | 5-Warning | Z00.0 | MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=90:3e:ab:88:26:35;CMTS-MAC=00:01:5c:b1:ae:73;CM-QOS=1.1;CM-VER=3.0; |
Jan 01 1970 00:00:18 | 6-Notice | N/A | Cable Modem Reboot due to T4 timeout ;CM-MAC=90:3e:ab:88:26:35;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0; |
Sep 30 2020 11:36:43 | 3-Critical | R04.0 | Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=90:3e:ab:88:26:35;CMTS-MAC=00:01:5c:b1:ae:73;CM-QOS=1.1;CM-VER=3.0; |
Sep 30 2020 11:32:43 | 3-Critical | R02.0 | No Ranging Response received - T3 time-out;CM-MAC=90:3e:ab:88:26:35;CMTS-MAC=00:01:5c:b1:ae:73;CM-QOS=1.1;CM-VER=3.0; |
Sep 30 2020 10:24:29 | 3-Critical | R06.0 | Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=90:3e:ab:88:26:35;CMTS-MAC=00:01:5c:b1:ae:73;CM-QOS=1.1;CM-VER=3.0; |
Sep 30 2020 10:24:29 | 3-Critical | R03.0 | Ranging Request Retries exhausted;CM-MAC=90:3e:ab:88:26:35;CMTS-MAC=00:01:5c:b1:ae:73;CM-QOS=1.1;CM-VER=3.0; |
Sep 30 2020 10:24:29 | 3-Critical | R06.0 | Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=90:3e:ab:88:26:35;CMTS-MAC=00:01:5c:b1:ae:73;CM-QOS=1.1;CM-VER=3.0; |
Sep 30 2020 10:24:29 | 3-Critical | R03.0 | Ranging Request Retries exhausted;CM-MAC=90:3e:ab:88:26:35;CMTS-MAC=00:01:5c:b1:ae:73;CM-QOS=1.1;CM-VER=3.0; |
Sep 30 2020 10:24:29 | 3-Critical | R06.0 | Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=90:3e:ab:88:26:35;CMTS-MAC=00:01:5c:b1:ae:73;CM-QOS=1.1;CM-VER=3.0; |
Sep 30 2020 10:24:29 | 3-Critical | R03.0 | Ranging Request Retries exhausted;CM-MAC=90:3e:ab:88:26:35;CMTS-MAC=00:01:5c:b1:ae:73;CM-QOS=1.1;CM-VER=3.0; |
Sep 30 2020 10:24:04 | 3-Critical | R02.0 | No Ranging Response received - T3 time-out;CM-MAC=90:3e:ab:88:26:35;CMTS-MAC=00:01:5c:b1:ae:73;CM-QOS=1.1;CM-VER=3.0; |
The upstream power is too high / out of spec on one of the channels. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.
In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test
If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.
No excess splitters. In fact, no splitters in the house at all as we only use wifi. The connection is tight and the wire is clean and the modem continues to error.
Got a tech visit scheduled finally.
Thanks!