Forum Discussion

mikerodda's avatar
mikerodda
Joining in
2 years ago

Internet connection consistently dropping

For approx 6 months my internet connection is been poor at best, I have recently contacted virgin media via phone line and they have performed a 24 hour test and determined nothing is wrong. However the light on my hub is red at all times they stated that is fine and nothing is wrong. Which i know is wrong as my hub was always green up until recently. I am now at the point that its dropping 4-5 times a day and I need to restart my router or the connection wont establish.

My router network logs are spammed with 

Time Priority Description

07/01/2024 15:37:31Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/01/2024 15:37:30Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/01/2024 15:37:19Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/01/2024 15:37:18Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
07/01/2024 15:37:10Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

My signals are

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

12030000002.538256 qam9
22110000002.438256 qam10
32190000002.537256 qam11
42350000002.238256 qam13
52430000001.938256 qam14
62510000001.938256 qam15
7259000000238256 qam16
82670000002.438256 qam17
92750000002.240256 qam18
102830000002.238256 qam19
11291000000238256 qam20
122990000001.936256 qam21
133070000001.736256 qam22
143150000001.737256 qam23
153230000001.738256 qam24
163310000001.538256 qam25
173390000001.738256 qam26
183470000001.538256 qam27
193550000001.538256 qam28
203630000001.438256 qam29
21371000000138256 qam30
223790000000.738256 qam31
233870000000.538256 qam32



Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1Locked38.980
2Locked38.9200
3Locked37.350
4Locked38.96032
5Locked38.6629
6Locked38.960
7Locked38.960
8Locked38.9832
9Locked40.360
10Locked38.62934
11Locked38.6380
12Locked36.34141
13Locked36.650
14Locked37.640
15Locked38.6160
16Locked38.920
17Locked38.660
18Locked38.930
19Locked38.960
20Locked38.940
21Locked38.970
22Locked38.9180
23Locked38.98413

pstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

14960000044.5512064 qam1
23660000044512032 qam3
33010002943.8512016 qam4
42359997043.5512016 qam5
54310000044.3512064 qam2



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000
5ATDMA0000
  • jbrennand's avatar
    jbrennand
    Very Insightful Person
    2 years ago

    Upstream looks problematic - can you do this...

    _____________________________________

    Switch the Hub off and unplug it from the mains supply for five minutes. Whilst it's off, do a quick check that all of your coax and ethernet cable connections are in nice and "finger" tight - at the Hub and wall box and also at any connectors etc. Ensure there are no “unterminated cable loose ends. Disconnect all the connections and reconnect to be sure. Also check that the internal wiring is ok with no kinking or chaffing. When its light, check that all looks good with the outside cabling and wall box (no “staples, etc.,) piercing the cables. Then switch the Hub back on and leave ~5 minutes When all done, check back in the settings and ensure that the RS error counts and T3 errors have all reset to 0. Then check every hour or so to see if they start reappearing - they shouldn't. If they do (particularly the postRS and T3 ones) you have a problem (noise) that only a Tech visit will sort.

    Also check the Upstream QAM’s are all at 64 - if they are still dropping (to 32/16) then see message 3 here…

    https://community.virginmedia.com/t5/Networking-and-WiFi/Regular-Intermittent-Upstream-dropouts/td-p/5202486

    • mikerodda's avatar
      mikerodda
      Joining in
      2 years ago

      I have all ready done all those, my only issue is the outside wires are exposed as the recent weather has caused the box to come off, and water to potentially penetrate the external coax lines. However I have checked those for tightness.

      • Daniel_Et's avatar
        Daniel_Et
        Forum Team
        2 years ago

        Hi mikerodda, thank you for your posts.

        We're sorry to hear about the problems you've been having with your internet connection 😔

        In order to discuss this further, we'll send you a private message on here. Look out for the envelope in the top right-hand corner.

        If you're on a portable device with a smaller screen, click on the icon in the top right-hand corner and select "messages" from the additional menu options.

        Thank you for your support jbrennand 👍

        Regards,
        Daniel

  • mikerodda's avatar
    mikerodda
    Joining in
    2 years ago

    At the time of internet loss

    07/01/2024 21:16:44

    critical

    No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

    07/01/2024 21:16:42

    Warning!

    RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

    07/01/2024 21:16:42

    critical

    SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

    07/01/2024 21:16:38

    critical

    No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

    07/01/2024 21:16:36

    Warning!

    RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

    07/01/2024 21:16:29

    critical

    SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

    07/01/2024 21:16:3

    Warning!

    RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

    07/01/2024 21:16:3

    critical

    No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

     

    Refresh data

    Downstream bonded channels

    Channel

    Frequency (Hz)

    Power (dBmV)

    SNR (dB)

    Modulation

    Channel ID

    1

    203000000

    0

    38

    256 qam

    9

    2

    211000000

    0

    38

    256 qam

    10

    3

    219000000

    0.2

    35

    256 qam

    11

    4

    235000000

    0

    38

    256 qam

    13

    5

    243000000

    -0.4

    38

    256 qam

    14

    6

    251000000

    -0.5

    38

    256 qam

    15

    7

    259000000

    -0.2

    38

    256 qam

    16

    8

    267000000

    0.2

    40

    256 qam

    17

    9

    275000000

    0

    38

    256 qam

    18

    10

    283000000

    0

    38

    256 qam

    19

    11

    291000000

    -0.2

    38

    256 qam

    20

    12

    299000000

    -0.2

    38

    256 qam

    21

    13

    307000000

    -0.2

    38

    256 qam

    22

    14

    315000000

    -0.2

    38

    256 qam

    23

    15

    323000000

    0

    38

    256 qam

    24

    16

    331000000

    0

    38

    256 qam

    25

    17

    339000000

    0

    38

    256 qam

    26

    18

    347000000

    0

    38

    256 qam

    27

    19

    355000000

    0

    38

    256 qam

    28

    20

    363000000

    -0.2

    38

    256 qam

    29

    21

    371000000

    -0.5

    38

    256 qam

    30

    22

    379000000

    -1

    38

    256 qam

    31

    23

    387000000

    -1.2

    38

    256 qam

    32

     

    Upstream bonded channels

    Channel

    Frequency (Hz)

    Power (dBmV)

    Symbol Rate (ksps)

    Modulation

    Channel ID

    1

    49600020

    51

    5120

    64 qam

    1

    2

    36600196

    51

    5120

    32 qam

    3

    3

    30100038

    50.5

    5120

    16 qam

    4

    4

    23599580

    52

    5120

    16 qam

    5

    5

    43100000

    51

    5120

    64 qam

    2




    Upstream bonded channels

    Channel

    Channel Type

    T1 Timeouts

    T2 Timeouts

    T3 Timeouts

    T4 Timeouts

    1

    ATDMA

    0

    0

    0

    0

    2

    ATDMA

    0

    0

    4

    0

    3

    ATDMA

    0

    0

    0

    0

    4

    ATDMA

    0

    0

    0

    0

    5

    ATDMA

    0

    0

    1

    0