Forum Discussion

Zoomeh's avatar
Zoomeh
Tuning in
3 months ago

Intermittent connection issues and packet loss

Hi All, 

I'm back after initially having my issue resolved in https://community.virginmedia.com/t5/Speed/Intermittent-issue-causing-slow-download-speeds/td-p/5550106

My connection issues are back and worse with constant timeouts and packet loss.
Live BQM 

Gig1, Hub5, Modem Mode.

Cable Modem StatusItem Status TypeChannel Overview Downstream Upstream

Cable Modem StatusOnlineDOCSIS 3.0
Primary downstream channelLockedSC-QAM
DOCSIS 3.0 channels325
DOCSIS 3.1 channels1

1

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
15230000007.138QAM 25621
23630000005.937QAM 2561
33870000005.537QAM 2564
43950000005.837QAM 2565
54190000006.537QAM 2568
64270000006.737QAM 2569
74510000006.637QAM 25612
84590000006.637QAM 25613
94830000006.737QAM 25616
104910000006.837QAM 25617
115150000006.838QAM 25620
12547000000838QAM 25624
135550000008.538QAM 25625
145790000008.739QAM 25628
155870000008.739QAM 25629
166030000008.339QAM 25631
176110000008.139QAM 25632
186190000008.239QAM 25633
19627000000838QAM 25634
206350000007.738QAM 25635
216430000007.738QAM 25636
226510000007.538QAM 25637
236590000007.638QAM 25638
246670000007.838QAM 25639
256750000007.638QAM 25640
266830000007.538QAM 25641
276910000007.438QAM 25642
286990000007.638QAM 25643
297070000007.739QAM 25644
307150000007.638QAM 25645
317230000007.539QAM 25646
327310000007.138QAM 25647

3.0 Downstream channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1Locked384778660
2Locked37654140
3Locked37944060
4Locked37908690
5Locked371319100
6Locked371512390
7Locked372232920
8Locked372661100
9Locked373706960
10Locked374165220
11Locked385326840
12Locked385393000
13Locked384258470
14Locked395100340
15Locked395104390
16Locked395626190
17Locked397216700
18Locked399074990
19Locked387949314
20Locked3810515890
21Locked3813325960
22Locked3815238690
23Locked3811642810
24Locked3811763600
25Locked3816965040
26Locked3816437810
27Locked3815497370
28Locked3814736580
29Locked3917514680
30Locked3817421080
31Locked3912905750
32Locked3817145360

3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
1591904K3736QAM 4096148

3.1 Downstream channels

Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile)
159Locked395.715226691705566

 

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
04960000043.35120QAM 641
14310000043.35120QAM 642
236600000435120QAM 643
33010000042.85120QAM 644
42360000042.85120QAM 645

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
0ATDMA0000
1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000

3.1 Upstream channels

Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation
61037.22KQAM 256

3.1 Upstream channels

Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts
6OFDMA20074000000184350
  • Zoomeh's avatar
    Zoomeh
    Tuning in
    3 months ago

    Network Log

    Time Priority Description
    11-11-2024 13:00:16warningDBC-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;
    11-11-2024 13:00:16noticeUS 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;
    11-11-2024 11:57:30warningDBC-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;
    11-11-2024 11:57:30noticeUS 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;
    11-11-2024 03:15:23warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
    11-11-2024 03:15:23warningDynamic Range Window violation
    10-11-2024 19:51:16warningDBC-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;
    10-11-2024 19:51:16noticeUS 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;
    10-11-2024 19:45:26criticalUnicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
    10-11-2024 19:45:26critical16 consecutive T3 timeouts while trying to range on upstream channel 8;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
    10-11-2024 19:43:06criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
    10-11-2024 19:41:12warningDBC-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;
    10-11-2024 19:41:12noticeUS 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;
    10-11-2024 19:41:12warningTCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
    10-11-2024 08:25:46noticeUS 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;
    10-11-2024 08:25:46warningDBC-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;
    10-11-2024 08:15:38noticeUS 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;
    10-11-2024 08:15:38warningDBC-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;
    10-11-2024 07:40:18errorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
    10-11-2024 02:22:42noticeUS 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;
    10-11-2024 02:22:42warningDBC-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;
    10-11-2024 02:02:35noticeUS 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;
    10-11-2024 02:02:35warningDBC-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;
    10-11-2024 01:22:13noticeUS 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;
    10-11-2024 01:22:13warningDBC-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;
    10-11-2024 01:01:59noticeUS 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;
    10-11-2024 01:01:59warningDBC-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;
    10-11-2024 00:51:54noticeUS 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;
    10-11-2024 00:51:54warningDBC-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;
    10-11-2024 00:21:38noticeUS 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;
    10-11-2024 00:21:38warningDBC-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;
    10-11-2024 00:01:22warningDBC-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;
    • jbrennand's avatar
      jbrennand
      Very Insightful Person
      3 months ago

      What devices do you have connected to the Hub on ethernet cables?

      Then check first for any “known network faults in your location - Look in 2 places

      1) Try the “check service,”Area status webpage (https://www.virginmedia.com/help/service-status)

      2) Then also Try the “free & automated” Service Status number - 0800 561 0061 - which usually gives the most up to date info. and tells you of more local issues and fix estimates, down to street cab/ postcode level.

      • Zoomeh's avatar
        Zoomeh
        Tuning in
        3 months ago

        Hi,

        I've got an opnsense router connected to the 2.5g port.

        All looks good my end and looks like a DOCSIS issue.

  • jpeg1's avatar
    jpeg1
    Alessandro Volta
    3 months ago

    It would be interesting to see what the packet loss looks like on a BQM.

    There is a lot of noise on the input, your Hub is working very hard to correct the errors. 

  • fizz's avatar
    fizz
    Fibre optic
    3 months ago

    Lots of upstream timeouts on docsis 3.1....