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Elsig's avatar
Elsig
Tuning in
7 months ago

Not getting 1gb speeds (100mbs at most)

I've had 1gb for a couple of months but i hardly ever get it. At most I get 100mbs.
If I restart the modem I get 1gb for a some hours or a day and then it goes back to 100mbs.

Not what I paid for....

Loads of errors in the log. See below.

I have a superhub 5 which is connected im modem mode. My router is a Unify DM.


Network Log

Time Priority Description
11-10-2024 17:44:08noticeGUI Login Status - Login Success from LAN interface
11-10-2024 12:38:28warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 12:38:28noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 12:28:24warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 12:28:24noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 12:18:20noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 12:18:20warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 07:55:44warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 07:55:44noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 06:46:12warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 06:46:12noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 06:45:07noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 06:45:07warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 06:34:55warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 06:34:55noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 13; New Profile: 12 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 04:54:13warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 04:54:13noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 04:50:09warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 04:50:09noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 03:33:33noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 03:33:33warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 02:33:00noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 02:33:00warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 02:24:37warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 02:24:37noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 01:57:47criticalReceived Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 01:54:31criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 01:52:46noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 01:52:46warningTCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
11-10-2024 01:52:46warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-10-2024 23:51:29noticeUS profile assignment change. US Chan ID: 6; Previous Profile: 12 13; New Profile: 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-10-2024 23:51:29warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-10-2024 21:37:03warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
141100000013.738QAM 2561
241900000013.838QAM 2562
342700000013.938QAM 2563
443500000014.238QAM 2564
544300000014.338QAM 2565
645100000014.638QAM 2566
745900000014.638QAM 2567
846700000014.638QAM 2568
947500000014.738QAM 2569
1048300000014.738QAM 25610
1149100000014.838QAM 25611
1249900000015.238QAM 25612
1350700000016.238QAM 25613
145150000001839QAM 25614
1552300000018.539QAM 25615
1653100000016.838QAM 25616
1753900000015.538QAM 25617
1854700000014.838QAM 25618
1955500000014.438QAM 25619
2056300000014.238QAM 25620
2157100000014.138QAM 25621
2257900000013.938QAM 25622
2358700000013.738QAM 25623
2459500000013.638QAM 25624
2560300000013.438QAM 25625
2662700000013.338QAM 25628
2763500000013.337QAM 25629
2865900000013.238QAM 25632
2966700000013.238QAM 25633
3069100000013.139QAM 25636
3169900000013.239QAM 25637
3272300000013.339QAM 25640

3.0 Downstream channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1Locked38350
2Locked38250
3Locked38350
4Locked38380
5Locked38290
6Locked38330
7Locked38520
8Locked38470
9Locked38530
10Locked38340
11Locked38760
12Locked38840
13Locked38690
14Locked39560
15Locked397936
16Locked3812249
17Locked3816629
18Locked3819615
19Locked382020
20Locked381861
21Locked381970
22Locked382100
23Locked383100
24Locked383190
25Locked382970
26Locked383270
27Locked375680
28Locked387760
29Locked386770
30Locked397510
31Locked398500
32Locked397400

 

ItemStatusTypeCable Modem StatusOnlineDOCSIS 3.0Primary downstream channelLockedSC-QAMChannel OverviewDownstreamUpstreamDOCSIS 3.0 channels325DOCSIS 3.1 channels11

3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
159944K1840QAM 40961108

3.1 Downstream channels

Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile)
159Locked3916.738936357790

 

 

 

 

3 Replies

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  • Client62's avatar
    Client62
    Alessandro Volta
    7 months ago

    This is almost a duplicate of
    https://community.virginmedia.com/t5/Networking-and-WiFi/Not-getting-1gb-speed-100mbs-at-most/td-p/5576265
    but with some Hub stats.

    The Downstream power levels are have a preferred range of -7 to +7 dBmV
    in this case the issues it they are all far too high & need to be corrected by an engineer

    3.0 Downstream channels

    Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
    141100000013.738QAM 2561
    241900000013.838QAM 2562
    342700000013.938QAM 2563
    443500000014.238QAM 2564
    544300000014.338QAM 2565
    645100000014.638QAM 2566
    745900000014.638QAM 2567
    846700000014.638QAM 2568
    947500000014.738QAM 2569
    1048300000014.738QAM 25610

     

    3.1 Downstream channels

    Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile)
    159Locked3916.738936357790

     

  • Tudor's avatar
    Tudor
    Very Insightful Person
    7 months ago

    10dBmV is the maximum power level for a good working system. You probably need a technician’s visit to rectify. Either a forward path attenuator or moving to a different tap on the street cabinet. We also need to upstream stats as well, they are just as important as the downstream and are needed to fully understand the problem. High downstream power levels often mean you are very near the street box, but the upstream figures are needed to confirm this and to choose between the two options I listed above.