Visitor
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3 Messages
Lose internet connection multiple times per day
I have a Netgear C7000v2. Many times a day I lose internet connectivity. At the same time I also lose wifi and I believe that this is the consequence of the modem rebooting. This shows up quite a bit in the event log of the modem:
2023-5-24, 13:41:23 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 13:32:04 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A) - Reason:INTERFERENCE
2023-5-24, 13:16:11 Notice (6) WiFi Interface [wl0] set to Channel 6 (Side-Band Channel:N/A) - Reason:INTERFERENCE
2023-5-24, 12:49:32 Notice (6) Honoring MDD; IP provisioning mode = IPv6
2023-5-24, 12:49:15 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 12:48:11 Warning (5) MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 12:36:17 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A) - Reason:INTERFERENCE
2023-5-24, 12:10:17 Notice (6) WiFi Interface [wl0] set to Channel 6 (Side-Band Channel:N/A) - Reason:INTERFERENCE
2023-5-24, 11:58:50 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 11:58:50 Warning (5) MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 11:54:37 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A) - Reason:INTERFERENCE
2023-5-24, 11:30:48 Notice (6) WiFi Interface [wl0] set to Channel 6 (Side-Band Channel:N/A) - Reason:INTERFERENCE
2023-5-24, 11:12:29 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 11:12:29 Warning (5) MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 10:34:31 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A) - Reason:INTERFERENCE
2023-5-24, 10:16:39 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 10:16:39 Warning (5) MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 10:15:59 Notice (6) WiFi Interface [wl0] set to Channel 6 (Side-Band Channel:N/A) - Reason:INTERFERENCE
2023-5-24, 09:08:36 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A) - Reason:INTERFERENCE
2023-5-24, 08:39:58 Notice (6) WiFi Interface [wl0] set to Channel 6 (Side-Band Channel:N/A) - Reason:INTERFERENCE
2023-5-24, 07:34:06 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 07:34:06 Warning (5) MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 02:39:55 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 02:39:55 Warning (5) MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 01:23:06 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-24, 01:23:06 Warning (5) MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-23, 23:40:52 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-23, 23:40:52 Warning (5) MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-23, 22:54:33 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-23, 22:54:32 Warning (5) MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-23, 22:34:25 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-23, 22:34:25 Warning (5) MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-23, 22:20:47 Warning (5) Dynamic Range Window violation
2023-5-23, 22:20:26 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-23, 22:19:50 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-23, 22:19:50 Warning (5) MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-23, 22:19:50 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-23, 22:19:48 Warning (5) MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
2023-5-23, 21:44:43 Notice (6) Honoring MDD; IP provisioning mode = IPv6
2023-5-23, 21:44:25 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.0;
Here is some output from the "Cable Connection" page of the modem:
Procedure Status Comment
Acquire Downstream Channel 417000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Security Enabled BPI+
IP Provisioning Mode Honor MDD honorMdd(4)
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 4 417000000 Hz 2.9 dBmV 38.4 dB 0 0
2 Locked QAM256 1 399000000 Hz 2.4 dBmV 37.2 dB 2 0
3 Locked QAM256 2 405000000 Hz 2.4 dBmV 38.1 dB 2 0
4 Locked QAM256 3 411000000 Hz 2.6 dBmV 38.2 dB 0 0
5 Locked QAM256 5 423000000 Hz 3 dBmV 38.3 dB 1 0
6 Locked QAM256 6 435000000 Hz 3.2 dBmV 38.3 dB 1 0
7 Locked QAM256 7 441000000 Hz 3.2 dBmV 38.4 dB 0 0
8 Locked QAM256 8 447000000 Hz 3.4 dBmV 38.5 dB 1 0
9 Locked QAM256 9 453000000 Hz 3.5 dBmV 38.5 dB 1 0
10 Locked QAM256 10 459000000 Hz 3.6 dBmV 38.6 dB 2 0
11 Locked QAM256 11 465000000 Hz 3.8 dBmV 38.7 dB 1 0
12 Locked QAM256 12 471000000 Hz 3.7 dBmV 38.7 dB 0 0
13 Locked QAM256 13 477000000 Hz 3.7 dBmV 38.9 dB 1 0
14 Locked QAM256 14 483000000 Hz 4 dBmV 39.1 dB 2 0
15 Locked QAM256 15 489000000 Hz 3.9 dBmV 39.1 dB 1 0
16 Locked QAM256 16 495000000 Hz 3.8 dBmV 39.1 dB 1 0
17 Locked QAM256 17 507000000 Hz 2.8 dBmV 38.2 dB 0 0
18 Locked QAM256 18 513000000 Hz 2.8 dBmV 38.2 dB 0 0
19 Locked QAM256 19 519000000 Hz 2.6 dBmV 38.1 dB 0 0
20 Locked QAM256 20 525000000 Hz 2.5 dBmV 37.8 dB 0 0
21 Locked QAM256 21 531000000 Hz 2.5 dBmV 37.8 dB 0 0
22 Locked QAM256 22 537000000 Hz 2.2 dBmV 37.6 dB 0 0
23 Locked QAM256 23 543000000 Hz 2.4 dBmV 37.9 dB 0 0
24 Locked QAM256 24 549000000 Hz 2.7 dBmV 38.1 dB 0 0
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 6 1280 Ksym/sec 39600000 Hz 40.3 dBmV
2 Locked ATDMA 2 5120 Ksym/sec 29200000 Hz 42.2 dBmV
3 Locked ATDMA 3 5120 Ksym/sec 22800000 Hz 42.9 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 16400000 Hz 42.1 dBmV
5 Locked ATDMA 5 2560 Ksym/sec 10400000 Hz 41.7 dBmV
6 Locked ATDMA 1 5120 Ksym/sec 35600000 Hz 43.7 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Any help or advice is appreciated.
EG
Expert
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110.3K Messages
2 years ago
Please redact all of the CM MAC and the CMTS MAC addresses from your error log entries for your privacy. They are considered to be personal information. The posting of personally identifiable information is a violation of their forum guidelines. The forum bot will not allow your post to be seen publically. It flagged your post as "Private".
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CCCam
Official Employee
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232 Messages
2 years ago
Hello, @user_578d40. We would be happy to help with your internet issues.
Could you please send our team a direct message with your full name and full address?
To send a "Direct Message" to Xfinity Support:
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Click the "Direct Messaging" icon
Click the "New message" (pencil and paper) icon
The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there
- As you are typing a drop-down list appears. Select "Xfinity Support" from that list
- An "Xfinity Support" graphic replaces the "To:" line
Type your message in the text area near the bottom of the window
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