Forum Discussion

be11aml's avatar
be11aml
On our wavelength
4 days ago

Lots of Errors & Profile Assignment Changes

There seems to be something not quite right with my connection, which has been going on for around 2 years. I did have an engineer visit, which helped the disconnections, but the Downstream and Upstream errors, never seemed to improve. Also getting lots of profile assignment changes in the logs.

I recently switched over to modem modem and installed a new Deco Mesh system and decided to revisit this issue. System has been up for 52 days and I plan to reboot today.

Potentially need an another engineer visit, but would appreciate the feedback of the community.

ItemStatusType
Cable Modem StatusOnlineDOCSIS 3.0
Primary downstream channelLockedSC-QAM
Channel OverviewDownstreamUpstream
DOCSIS 3.0 channels315
DOCSIS 3.1 channels11

8 Replies

  • be11aml's avatar
    be11aml
    On our wavelength

    3.0 Downstream channels

    Channel    Frequency (Hz)    Power (dBmV)    SNR (dB)    Modulation    Channel ID
    1    331000000    0.4    41    QAM 256    25
    2    139000000    4.4    42    QAM 256    1
    3    147000000    4.1    42    QAM 256    2
    4    155000000    3.6    42    QAM 256    3
    5    163000000    3.2    42    QAM 256    4
    6    171000000    3    42    QAM 256    5
    7    179000000    2.7    42    QAM 256    6
    8    187000000    2.6    42    QAM 256    7
    9    195000000    2.7    42    QAM 256    8
    10    203000000    2.2    42    QAM 256    9
    11    211000000    2.2    42    QAM 256    10
    12    219000000    1.9    42    QAM 256    11
    13    227000000    1.9    42    QAM 256    12
    14    235000000    2    42    QAM 256    13
    15    283000000    1    42    QAM 256    19
    16    291000000    0.8    42    QAM 256    20
    17    299000000    0.9    42    QAM 256    21
    18    307000000    0.8    42    QAM 256    22
    19    315000000    0.6    41    QAM 256    23
    20    323000000    0.5    41    QAM 256    24
    21    339000000    0.3    42    QAM 256    26
    22    347000000    0.2    42    QAM 256    27
    23    355000000    0.2    42    QAM 256    28
    24    363000000    0.1    42    QAM 256    29
    25    371000000    0    42    QAM 256    30
    26    379000000    0.3    42    QAM 256    31
    27    387000000    0.2    42    QAM 256    32
    28    395000000    0.2    42    QAM 256    33
    29    403000000    0.3    42    QAM 256    34
    30    411000000    0.2    42    QAM 256    35
    31    419000000    0.4    42    QAM 256    36

    3.0 Downstream channels

    Channel    Locked Status    RxMER (dB)    Pre RS Errors    Post RS Errors
    1    Locked    41    7090    2779
    2    Locked    42    3391841    219441
    3    Locked    42    5499181    271104
    4    Locked    42    6814003    322565
    5    Locked    42    12672461    491066
    6    Locked    42    45993806    2566478
    7    Locked    42    87831876    7988018
    8    Locked    42    42987890    1824268
    9    Locked    42    128895    5497
    10    Locked    42    68034    6561
    11    Locked    42    37784    6657
    12    Locked    42    32207    5239
    13    Locked    42    40308    5884
    14    Locked    42    28071    7249
    15    Locked    42    38259    4368
    16    Locked    42    102940    5395
    17    Locked    42    91883    5216
    18    Locked    42    50740    4041
    19    Locked    41    19547    5111
    20    Locked    41    8074    4134
    21    Locked    42    8409    4694
    22    Locked    42    6852    2912
    23    Locked    42    9227    3515
    24    Locked    42    8888    4076
    25    Locked    42    7662    1595
    26    Locked    42    9137    2279
    27    Locked    42    7087    2869
    28    Locked    42    5987    1490
    29    Locked    42    9747    3749
    30    Locked    42    9034    2919
    31    Locked    42    10561    975
    3.1 Downstream channels

    Channel    Channel Width (MHz)    FFT Type    Number of Active Subcarriers    Modulation (Active Profile)    First Active Subcarrier (Hz)
    37    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)
    37    Locked    42    -1.2    2187901316    2213

  • be11aml's avatar
    be11aml
    On our wavelength

    3.0 Upstream channels

    Channel    Frequency (Hz)    Power (dBmV)    Symbol Rate (ksps)    Modulation    Channel ID
    0    49600000    44.8    5120    QAM 64    1
    1    43100000    44    5120    QAM 64    2
    2    36600000    43.5    5120    QAM 64    3
    3    30100000    43    5120    QAM 64    4
    4    23600000    42.3    5120    QAM 64    5
    3.0 Upstream channels

    Channel    Channel Type    T1 Timeouts    T2 Timeouts    T3 Timeouts    T4 Timeouts
    0    ATDMA    0    1    55    0
    1    ATDMA    0    1    36    0
    2    ATDMA    0    1    36    0
    3    ATDMA    0    1    36    0
    4    ATDMA    0    1    55    0
    3.1 Upstream channels

    Channel    Channel Width (MHz)    Power (dBmV)    FFT Type    Modulation
    12    10.4    40.5    2K    QAM 256
    3.1 Upstream channels

    Channel    Channel Type    Number of Active Subcarriers    First Active Subcarrier (Hz)    T3 Timeouts    T4 Timeouts
    12    OFDMA    208    74000000    40    0

  • be11aml's avatar
    be11aml
    On our wavelength

    3.0 Upstream channels

    Channel    Frequency (Hz)    Power (dBmV)    Symbol Rate (ksps)    Modulation    Channel ID
    0    49600000    44.8    5120    QAM 64    1
    1    43100000    44    5120    QAM 64    2
    2    36600000    43.5    5120    QAM 64    3
    3    30100000    43    5120    QAM 64    4
    4    23600000    42.3    5120    QAM 64    5
    3.0 Upstream channels

    Channel    Channel Type    T1 Timeouts    T2 Timeouts    T3 Timeouts    T4 Timeouts
    0    ATDMA    0    1    55    0
    1    ATDMA    0    1    36    0
    2    ATDMA    0    1    36    0
    3    ATDMA    0    1    36    0
    4    ATDMA    0    1    55    0
    3.1 Upstream channels

    Channel    Channel Width (MHz)    Power (dBmV)    FFT Type    Modulation
    12    10.4    40.5    2K    QAM 256
    3.1 Upstream channels

    Channel    Channel Type    Number of Active Subcarriers    First Active Subcarrier (Hz)    T3 Timeouts    T4 Timeouts
    12    OFDMA    208    74000000    40    0


    General Configuration

    Network access    Allowed
    Maximum Number of CPEs    1
    Baseline Privacy    Enabled
    DOCSIS Mode    3.1
    Config file    cmreg-vmdg660-bbt076-b.cm
    Primary Downstream Service Flow

    SFID    161726
    Max Traffic Rate    1230000450 bps
    Max Traffic Burst    42600bytes
    Min Traffic Rate    0 bps
    Primary Upstream Service Flow

    SFID    161725
    Max Traffic Rate    110000274 bps
    Max Traffic Burst    42600bytes
    Min Traffic Rate    0 bps
    Max Concatenated Burst    42600bytes
    Scheduling Type    Best Effort

  • be11aml's avatar
    be11aml
    On our wavelength

    Network Log

    Time    Priority    Description
    05-06-2025 07:39:50    notice    GUI Login Status - Login Success from LAN interface
    05-06-2025 07:27:03    notice    GUI Login Status - Login Success from LAN interface
    04-06-2025 23:06:53    warning    RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 22:07:58    notice    GUI Login Status - Login Success from LAN interface
    04-06-2025 21:49:01    notice    GUI Login Status - Login Success from LAN interface
    04-06-2025 21:04:01    notice    GUI Login Status - Login Success from LAN interface
    04-06-2025 18:21:41    error    DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 16:55:56    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 16:50:53    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 16:05:31    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 16:00:28    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 15:38:22    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 15:33:19    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 15:20:06    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 15:15:01    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 08:52:55    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 08:47:52    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 04:14:16    warning    RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 01:30:24    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    04-06-2025 00:26:35    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    03-06-2025 21:34:00    warning    RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    03-06-2025 17:56:40    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    03-06-2025 17:51:37    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    03-06-2025 17:45:10    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    03-06-2025 17:40:07    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    03-06-2025 17:35:07    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    03-06-2025 17:30:04    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    03-06-2025 17:20:09    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    03-06-2025 17:15:06    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    03-06-2025 17:12:05    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    03-06-2025 17:07:02    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    03-06-2025 06:46:28    warning    RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    02-06-2025 14:14:31    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    02-06-2025 14:09:28    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    02-06-2025 13:39:51    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    02-06-2025 13:34:48    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    02-06-2025 13:33:15    notice    US profile assignment change. US Chan ID: 12; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=d0:6d:c9:01:96:3f;CMTS-MAC=00:01:5c:7a:98:71;CM-QOS=1.1;CM-VER=3.1;
    13-04-2025 09:13:09    notice    GUI Login Status - Login Success from LAN interface

    • Adduxi's avatar
      Adduxi
      Very Insightful Person

      Horrendous connection.  Those PostRS errors should be zero, or very close to.  Most likely "noise" ingress,  could be a local SNR issue, loose connections or cable deterioration?  You will need a VM tech to assess and fix this issue.   All you can do is check for loose connections and perhaps corrosion on the joints?   Modem mode will not make any difference, apart from VM can't run the full diagnostics remotely. 

      Try checking with Area faults on  0800 561 0061 or if you have a VM landline 150 as small local faults are not listed on the VM status page.

      Also setup a BQM for evidence of the poor connection - http://www.thinkbroadband.com/ping

       

  • Hi be11aml 👋 Welcome back to the community forum! Thanks for posting. 

    Sorry to hear these concerns about your connection! We will be happy to take a look at things from our side, but it's worth us mentioning that we are very limited in the testing we can run whilst you are using 3rd party equipment / running in modem mode. We will ask you to temporarily swap back to router mode so we can run additional testing if needed. 

    If you can please keep an eye on the inbox 📩 in the top right corner of the page, I will send you a PM to confirm a few details and investigate. 

    We can then return to this public thread with another update when possible. Thanks for your patience in the meantime! 🌞

  • Hi All 👋 Just returning to keep this public thread updated. 

    Thanks to be11aml for PMing with me 📩. We were able to run some testing including checks in the local area for any identified outages or issues at the cabinet. 

    We also discussed that as the hub is currently running in Modem mode we are limited in the diagnostic testing we can run. After temporarily swapping the hub back to Router mode we then ran some additional testing. 

    There were no issues identified in the local area, at the cabinet, or with the speeds and connection reaching the hub. Sadly we do need to use the evidence we find when completing this kind of testing to identify any issue which would require an engineer to investigate further. In this instance, no issues were found which would require further investigation. 

    I appreciate this may be frustrating given the error logs showing in the hub data - but we do have to go on the data our systems provide as evidence. I've advised that running a BQM to gather further data for us to review would be beneficial, or further anecdotal detail about any issues that are happening at the customers end (rather than just hub log data) so we can raise this further if needed. Or also to run the hub in router mode for several days if the issues persist so we have some historic data to use as a record of any disconnections or speed issues. (As we are limited with testing whilst in Modem mode, and we can't offer support with 3rd Party equipment, as per the service T&C's 👉 https://virg.in/legals )

    Be11aml is aware how to get back in touch if they would like further support. Thanks for your time! Wishing you all the best. 🌞

      

  • be11aml's avatar
    be11aml
    On our wavelength

    Thank you for the reply. I agree with you that this is unacceptable. Unfortunately, one of the mods has been in touch, but insists there is no problem. 

    For anyone who has logs  of errors, this is all normal, you are just imagining the problem. 

    Maybe I will not do the contract renewal dance with Virgin later in the year, if that is the attitude to customer support