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kc5mhb's avatar
kc5mhb
New Contributor
7 years ago

No Ranging Response received - T3 time-out / Lost MDD Timeout

I have an Arris SB6190 Modem (no WiFi) that is a little over a year old.  In the past 6 months or so I've noticed the modem will lose connection to the internet which drops the DHCP address to my router.  The router sees there is no internet connection so it throws up a red light on it (ASUS AC2400 / AC87U).  The only way to get an IP address back is to reboot the modem.  I've noticed uncorrectable  errors on the line and even made a call inquiring about it but was told it was in specs.  In the past, dealing with T1 and T3 issues in the communications industry, errors mean there is trouble somewhere on the line or the equipment.  Granted some errors are the result of collisions and noise but what I'm seeing appears high.  This is a straight run from the pole to the modem with no splitters as I only have internet service.  Here is a copy of the status screen and system log:

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 256QAM 73 681.00 MHz -7.00 dBmV 35.78 dB 8 0
2 Locked 256QAM 74 687.00 MHz -7.20 dBmV 36.61 dB 0 0
3 Locked 256QAM 75 693.00 MHz -8.00 dBmV 35.78 dB 14 0
4 Locked 256QAM 76 699.00 MHz -8.70 dBmV 35.60 dB 0 0
5 Locked 256QAM 77 705.00 MHz -9.80 dBmV 34.48 dB 324375 2289694
6 Locked 256QAM 78 711.00 MHz -9.90 dBmV 34.48 dB 330614 2355607
7 Locked 256QAM 79 717.00 MHz -9.80 dBmV 35.08 dB 0 0
8 Locked 256QAM 80 723.00 MHz -9.70 dBmV 35.08 dB 0 0
9 Locked 256QAM 81 729.00 MHz -9.40 dBmV 35.60 dB 2 0
10 Locked 256QAM 82 735.00 MHz -9.60 dBmV 34.93 dB 0 0
11 Locked 256QAM 83 741.00 MHz -8.40 dBmV 35.60 dB 0 0
12 Locked 256QAM 84 747.00 MHz -8.70 dBmV 35.08 dB 0 0
13 Locked 256QAM 85 753.00 MHz -7.70 dBmV 35.60 dB 0 0
14 Locked 256QAM 86 759.00 MHz -8.40 dBmV 35.60 dB 0 0
15 Locked 256QAM 87 765.00 MHz -7.90 dBmV 35.78 dB 0 0
16 Locked 256QAM 88 771.00 MHz -7.80 dBmV 35.78 dB 0 0
17 Locked 256QAM 89 777.00 MHz -8.30 dBmV 35.78 dB 35514 164352
18 Locked 256QAM 90 783.00 MHz -8.80 dBmV 35.78 dB 15203 109180
19 Locked 256QAM 91 789.00 MHz -9.10 dBmV 35.60 dB 4337 9331
20 Locked 256QAM 92 795.00 MHz -8.20 dBmV 36.39 dB 0 0
21 Locked 256QAM 93 801.00 MHz -8.20 dBmV 36.39 dB 0 0
22 Locked 256QAM 94 807.00 MHz -8.00 dBmV 36.61 dB 0 0
23 Locked 256QAM 95 813.00 MHz -8.80 dBmV 35.60 dB 0 0
24 Locked 256QAM 96 819.00 MHz -8.20 dBmV 36.39 dB 7 0
25 Locked 256QAM 121 825.00 MHz -8.60 dBmV 35.80 dB 0 0
26 Locked 256QAM 122 831.00 MHz -9.20 dBmV 35.70 dB 0 0
27 Locked 256QAM 123 837.00 MHz -10.70 dBmV 35.10 dB 0 0
28 Locked 256QAM 124 843.00 MHz -10.50 dBmV 35.20 dB 123 713
29 Locked 256QAM 125 849.00 MHz -9.70 dBmV 35.70 dB 6 0
30 Locked 256QAM 126 855.00 MHz -9.20 dBmV 35.90 dB 0 0
31 Locked 256QAM 127 861.00 MHz -9.60 dBmV 35.50 dB 0 0
32 Locked 256QAM 128 867.00 MHz -11.30 dBmV 34.90 dB 0 0

Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 4 2560 kSym/s 21.00 MHz 37.50 dBmV
2 Locked ATDMA 3 5120 kSym/s 25.80 MHz 37.50 dBmV
3 Locked ATDMA 2 5120 kSym/s 32.20 MHz 39.00 dBmV
4 Locked ATDMA 1 5120 kSym/s 38.60 MHz 40.00 dBmV


Current System Time: Fri Dec 22 16:06:23 2017

Event Log

The table below contains the log of events that the SB6190 has detected. This log can be important to the service provider to help diagnose and correct problems, if any should occur.

TimePriorityDescription
Fri Dec 22 14:16:45 2017 3 No Ranging Response received - T3 time-out;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 14:16:46 2017 5 RCS Partial Service;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 14:18:33 2017 5 Lost MDD Timeout;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 14:18:33 2017 5 RCS Partial Service;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 14:18:44 2017 5 Lost MDD Timeout;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 14:18:46 2017 5 RCS Partial Service;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 14:19:45 2017 5 Lost MDD Timeout;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 14:19:47 2017 5 RCS Partial Service;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 14:22:48 2017 5 Lost MDD Timeout;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 14:22:48 2017 5 RCS Partial Service;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 14:23:29 2017 5 Lost MDD Timeout;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 14:23:36 2017 5 RCS Partial Service;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 14:24:29 2017 5 Lost MDD Timeout;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 14:24:30 2017 5 RCS Partial Service;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 15:03:13 2017 5 Lost MDD Timeout;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 15:03:13 2017 5 RCS Partial Service;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 15:28:12 2017 5 Lost MDD Timeout;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 15:28:12 2017 5 RCS Partial Service;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 15:54:10 2017 5 Lost MDD Timeout;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;
Fri Dec 22 15:54:22 2017 5 RCS Partial Service;CM-MAC=d4:0a:a9:55:ab:95;CMTS-MAC=00:14:f1:e4:c9:ba;CM-QOS=1.1;CM-VER=3.0;

I have already purchased another modem to replace this one in case it is bad but before I do so, do the channels and line levels look correct or are they out of spec?  This is becoming more and more of an issue and I am almost daily resetting the modem.

  • DannyS's avatar
    DannyS
    Moderator
    7 years ago
    The purpose of the Cox Internet Forum is to allow customers to discuss technical topics related to residential Cox Cable, Telephone and High Speed Internet services with other customers. This appears as if you may need for someone to look into your account personally. We can definitely be able to assist you with this. Please reach us on Twitter at @CoxHelp, visit us on Facebook, or email by at cox.help@cox.com. Provide us the name on the account with the full service address with a link to this thread so we can get started.