I have an issue with my connection which i have been monitoring for the last week with the Think Broadband Quality Monitor.As you can see, that just before 10pm every single night until after 2am, i cannot play any online games, let alone watch Netflix, Disney or Amazon as it just constantly buffers.There is obviously someone or something that is causing this traffic at that time and it is rendering my connection useless.I have done the usual checks (Network Engineeer) so i know it is not a cabling issue or even a router issue at my end and i have nothing set to check at these times.I do not have any Malware, Virus, or even Trojan etc on my pc as i know what traffic is coming in and going out.And i have attached the router (Hub 5) logs for you to see.I would like someone from Virgin Media to take a look at this issue as i can only do so much, and please do not say we have checked and there is no issue as there clearly 100% is an issue on the network at this time, and if this cannot be resolved, then i would like to terminate my contract.This is the 26th April 2025 This is the 27th April 2025 This is the 28th April 2025 This is the 29th April 2025 (Todays so far) Router Logs in next post

The same team often responds to tweets within 10 minutes flat. Horses for courses etc.

Router Logs Item Status TypeCable Modem Status Online DOCSIS 3.0Primary downstream channel Locked SC-QAMChannel Overview Downstream UpstreamDOCSIS 3.0 channels 32 5DOCSIS 3.1 channels 1 1 3.0 Downstream channelsChannel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID1 331000000 6.3 41 QAM 256 252 139000000 5.1 39 QAM 256 13 147000000 5 37 QAM 256 24 155000000 5.2 35 QAM 256 35 163000000 5.5 38 QAM 256 46 171000000 5.4 40 QAM 256 57 179000000 5.7 41 QAM 256 68 187000000 5.9 42 QAM 256 79 195000000 6.5 42 QAM 256 810 203000000 6.6 40 QAM 256 911 211000000 6.9 40 QAM 256 1012 219000000 7 41 QAM 256 1113 227000000 6.8 40 QAM 256 1214 235000000 6.8 41 QAM 256 1315 243000000 6.7 42 QAM 256 1416 251000000 6.6 42 QAM 256 1517 259000000 6.5 42 QAM 256 1618 267000000 6.5 42 QAM 256 1719 291000000 6.7 38 QAM 256 2020 299000000 6.8 39 QAM 256 2121 323000000 6.6 41 QAM 256 2422 363000000 6 42 QAM 256 2923 379000000 5.9 42 QAM 256 3124 387000000 5.6 42 QAM 256 3225 395000000 5.7 41 QAM 256 3326 403000000 5.5 42 QAM 256 3427 411000000 5.7 42 QAM 256 3528 419000000 5.5 42 QAM 256 3629 427000000 5.8 42 QAM 256 3730 435000000 5.4 42 QAM 256 3831 443000000 5.5 42 QAM 256 3932 451000000 5.5 42 QAM 256 40 3.0 Downstream channelsChannel Locked Status RxMER (dB) Pre RS Errors Post RS Errors1 Locked 41 1115 432 Locked 39 19380442 4476643 Locked 37 199011443 23601764 Locked 35 714389167 74725725 Locked 38 23459986 3720616 Locked 40 331895 84777 Locked 41 416195 56448 Locked 42 36930 19549 Locked 42 73536 161710 Locked 40 92543 25411 Locked 40 939029 92912 Locked 41 13147 9013 Locked 40 119089 7714 Locked 41 109715 20215 Locked 42 47674 37716 Locked 42 849 35417 Locked 42 594 33618 Locked 42 579 30519 Locked 38 413998 24720 Locked 39 1061092 55821 Locked 41 821 8422 Locked 42 515 9223 Locked 42 612 10524 Locked 42 503 11625 Locked 41 655 16326 Locked 42 428 41027 Locked 42 6580 46128 Locked 42 320 30729 Locked 42 602 7630 Locked 42 780 3931 Locked 42 799 4832 Locked 42 970 58 3.1 Downstream channelsChannel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)159 94 4K 1840 QAM 4096 1108 3.1 Downstream channelsChannel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile)159 Locked 43 6.0 2349417 8223 3.0 Upstream channelsChannel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID0 49600000 44.3 5120 QAM 64 11 43100000 43.5 5120 QAM 64 22 36600000 43.3 5120 QAM 64 33 30100000 42.5 5120 QAM 64 44 23600000 42 5120 QAM 64 5 3.0 Upstream channelsChannel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts0 ATDMA 0 1 3 01 ATDMA 0 1 0 02 ATDMA 0 1 0 03 ATDMA 0 1 0 04 ATDMA 0 1 0 0 3.1 Upstream channelsChannel Channel Width (MHz) Power (dBmV) FFT Type Modulation6 10 38.5 2K QAM 256 3.1 Upstream channelsChannel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts6 OFDMA 200 74000000 0 0 Network LogTime Priority Description29-04-2025 12:34:44 notice GUI Login Status - Login Success from LAN interface 29-04-2025 07:27:51 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC 29-04-2025 07:27:51 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC= 29-04-2025 06:37:30 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=; 29-04-2025 06:37:30 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS- 29-04-2025 05:47:04 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC= 29-04-2025 05:47:04 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC= 29-04-2025 05:37:03 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC= 29-04-2025 05:37:03 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC 29-04-2025 04:36:32 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC= 29-04-2025 04:36:32 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC= 29-04-2025 04:26:24 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC 29-04-2025 04:26:24 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC= 29-04-2025 04:06:13 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC= 29-04-2025 04:06:13 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC= 29-04-2025 03:46:04 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC; 29-04-2025 03:46:04 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC 29-04-2025 03:15:54 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC= 29-04-2025 03:15:54 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC= 29-04-2025 03:05:48 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC=29-04-2025 03:05:48 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS- 29-04-2025 00:06:47 notice GUI Login Status - Login Success from LAN interface 28-04-2025 19:01:54 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC= 28-04-2025 19:01:54 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC= 28-04-2025 17:52:13 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=; 28-04-2025 17:52:13 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC= 28-04-2025 16:50:41 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC= 28-04-2025 16:50:41 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC= 28-04-2025 16:40:35 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC= 28-04-2025 16:40:35 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC= 28-04-2025 15:40:02 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC= 28-04-2025 15:40:02 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC= 28-04-2025 14:36:05 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC= 28-04-2025 14:36:05 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC= Mod Edit: Personal details removed

Looking at the amount of PostRS errors, I'm surprised you get any service at all. PostRS errors should be zero, or close to, on a good circuit. That's a lot of noise ingress going on.You will need a tech to sort that out, as there is not much you can do except check all the connections are clean and tight. Loose connections are one of the causes of noise ingress.

The BQM suggests contention at busy times. And the poor signal/noise on the lowest frequency channels suggests a cable problem.Two reasons to get a technician in to investigate. But only the second one is going to be fixable.

Unusable At Night | Virgin Media Community

10 Replies

Dominatez
Superfast
24 days ago
Router Logs

Item Status Type
Cable Modem Status Online DOCSIS 3.0
Primary downstream channel Locked SC-QAM
Channel Overview Downstream Upstream
DOCSIS 3.0 channels 32 5
DOCSIS 3.1 channels 1 1

3.0 Downstream channels
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 331000000 6.3 41 QAM 256 25
2 139000000 5.1 39 QAM 256 1
3 147000000 5 37 QAM 256 2
4 155000000 5.2 35 QAM 256 3
5 163000000 5.5 38 QAM 256 4
6 171000000 5.4 40 QAM 256 5
7 179000000 5.7 41 QAM 256 6
8 187000000 5.9 42 QAM 256 7
9 195000000 6.5 42 QAM 256 8
10 203000000 6.6 40 QAM 256 9
11 211000000 6.9 40 QAM 256 10
12 219000000 7 41 QAM 256 11
13 227000000 6.8 40 QAM 256 12
14 235000000 6.8 41 QAM 256 13
15 243000000 6.7 42 QAM 256 14
16 251000000 6.6 42 QAM 256 15
17 259000000 6.5 42 QAM 256 16
18 267000000 6.5 42 QAM 256 17
19 291000000 6.7 38 QAM 256 20
20 299000000 6.8 39 QAM 256 21
21 323000000 6.6 41 QAM 256 24
22 363000000 6 42 QAM 256 29
23 379000000 5.9 42 QAM 256 31
24 387000000 5.6 42 QAM 256 32
25 395000000 5.7 41 QAM 256 33
26 403000000 5.5 42 QAM 256 34
27 411000000 5.7 42 QAM 256 35
28 419000000 5.5 42 QAM 256 36
29 427000000 5.8 42 QAM 256 37
30 435000000 5.4 42 QAM 256 38
31 443000000 5.5 42 QAM 256 39
32 451000000 5.5 42 QAM 256 40

3.0 Downstream channels
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1 Locked 41 1115 43
2 Locked 39 19380442 447664
3 Locked 37 199011443 2360176
4 Locked 35 714389167 7472572
5 Locked 38 23459986 372061
6 Locked 40 331895 8477
7 Locked 41 416195 5644
8 Locked 42 36930 1954
9 Locked 42 73536 1617
10 Locked 40 92543 254
11 Locked 40 939029 929
12 Locked 41 13147 90
13 Locked 40 119089 77
14 Locked 41 109715 202
15 Locked 42 47674 377
16 Locked 42 849 354
17 Locked 42 594 336
18 Locked 42 579 305
19 Locked 38 413998 247
20 Locked 39 1061092 558
21 Locked 41 821 84
22 Locked 42 515 92
23 Locked 42 612 105
24 Locked 42 503 116
25 Locked 41 655 163
26 Locked 42 428 410
27 Locked 42 6580 461
28 Locked 42 320 307
29 Locked 42 602 76
30 Locked 42 780 39
31 Locked 42 799 48
32 Locked 42 970 58

3.1 Downstream channels
Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
159 94 4K 1840 QAM 4096 1108

3.1 Downstream channels
Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile)
159 Locked 43 6.0 2349417 8223

3.0 Upstream channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
0 49600000 44.3 5120 QAM 64 1
1 43100000 43.5 5120 QAM 64 2
2 36600000 43.3 5120 QAM 64 3
3 30100000 42.5 5120 QAM 64 4
4 23600000 42 5120 QAM 64 5

3.0 Upstream channels
Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
0 ATDMA 0 1 3 0
1 ATDMA 0 1 0 0
2 ATDMA 0 1 0 0
3 ATDMA 0 1 0 0
4 ATDMA 0 1 0 0

3.1 Upstream channels
Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation
6 10 38.5 2K QAM 256

3.1 Upstream channels
Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts
6 OFDMA 200 74000000 0 0

Network Log
Time Priority Description
29-04-2025 12:34:44 notice GUI Login Status - Login Success from LAN interface

29-04-2025 07:27:51 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC

29-04-2025 07:27:51 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC=

29-04-2025 06:37:30 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=;

29-04-2025 06:37:30 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-

29-04-2025 05:47:04 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=

29-04-2025 05:47:04 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC=

29-04-2025 05:37:03 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=

29-04-2025 05:37:03 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC

29-04-2025 04:36:32 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=

29-04-2025 04:36:32 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC=

29-04-2025 04:26:24 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC

29-04-2025 04:26:24 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC=

29-04-2025 04:06:13 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=

29-04-2025 04:06:13 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC=

29-04-2025 03:46:04 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC;

29-04-2025 03:46:04 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC

29-04-2025 03:15:54 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=

29-04-2025 03:15:54 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC=

29-04-2025 03:05:48 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC=29-04-2025 03:05:48 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-

29-04-2025 00:06:47 notice GUI Login Status - Login Success from LAN interface

28-04-2025 19:01:54 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC=

28-04-2025 19:01:54 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=

28-04-2025 17:52:13 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=;

28-04-2025 17:52:13 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC=

28-04-2025 16:50:41 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC=

28-04-2025 16:50:41 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=

28-04-2025 16:40:35 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC=

28-04-2025 16:40:35 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=

28-04-2025 15:40:02 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=

28-04-2025 15:40:02 notice US profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=;CMTS-MAC=

28-04-2025 14:36:05 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=

28-04-2025 14:36:05 notice US profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=;CMTS-MAC=

Mod Edit: Personal details removed
- jpeg1
  Alessandro Volta
  24 days ago
  The BQM suggests contention at busy times. And the poor signal/noise on the lowest frequency channels suggests a cable problem.
  Two reasons to get a technician in to investigate. But only the second one is going to be fixable.
- Dominatez
  Superfast
  21 days ago
  Still Waiting a response from Virgin Staff who read this forum !!
  - Cardiffman282
    Wise owl
    20 days ago
    The same team often responds to tweets within 10 minutes flat. Horses for courses etc.
Adduxi
Very Insightful Person
24 days ago
Looking at the amount of PostRS errors, I'm surprised you get any service at all. PostRS errors should be zero, or close to, on a good circuit. That's a lot of noise ingress going on.
You will need a tech to sort that out, as there is not much you can do except check all the connections are clean and tight. Loose connections are one of the causes of noise ingress.
legacy1
Alessandro Volta
24 days ago
Or a DoS
- Dominatez
  Superfast
  24 days ago
  Not quite sure why someone would be hitting me with a Denial Of Service attack. Not that special online.
  - legacy1
    Alessandro Volta
    24 days ago
    Do you do online backup?

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Unusable At Night

10 Replies

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