Forum Discussion

pks01's avatar
pks01
Joining in
11 months ago
Solved

Upload only 249Kbps (should be 25Mbps)

Dire upload speeds all day today. Downloads are fine, but Virgin's speed test tool shows:

  • Latency 150ms
  • Jitter 184ms
  • Download 276Mbps
  • Upload 249Kbps

The upload is a mere 1/100 of the 25Mbps rate promised in my package.

Jitter is apparently appalling, and latency is very poor too.

I have no idea how long it has been this slow, as I only checked today.

How do I get this fixed?

I have done a hard reset on the Hub3 several times during the day, but that has not made any difference.

  • carl_pearce's avatar
    carl_pearce
    11 months ago

    Power levels, mostly, too high on the downstream, and QAM values on the upstream show why you are seeing a large number of T3 timeouts, and will be the reason why you have a slow upload speed.

    Needs looking into further by VM.

16 Replies

  • Client62's avatar
    Client62
    Alessandro Volta
    11 months ago

    The large latency & jitter figures look like a test over WI-Fi.

    We need to see the full set of stats for the VM Hub and the performance your device achieves.

    Please post a screen shot of the RUN FULL TEST from

    https://www.samknows.com/realspeed/

     

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

    Please post some stats: 

    How to get stats from a VM hub (no need to logon to the hub)

    Open a web browser and go to 192.168.0.1 router mode or 192.168.100.1 modem mode

    • Click on the “> Check router status” button
    • Click on the “Downstream” tab, copy the text and paste into your reply, do not take a screen shot
    • Click on the “Upstream” tab, copy the text and paste into your reply
    • Click on the “Networking” tab, copy the text and paste into your reply.
      • Do NOT post photos or screen shots they will be rejected as they contain MAC addresses. The board software will automatically change MAC addresses to **:** if done as above.
  • pks01's avatar
    pks01
    Joining in
    11 months ago

    NB - these are from my desktop, and therefore hardwired as there is no WiFi on the machine.

    Downstream bonded channels

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

    145100000010.938256 qam12
    245900000010.938256 qam13
    34670000001138256 qam14
    44750000001138256 qam15
    548300000011.438256 qam16
    649100000011.638256 qam17
    749900000011.438256 qam18
    85070000001138256 qam19
    951500000010.938256 qam20
    1052300000010.538256 qam21
    1153100000010.538256 qam22
    1253900000010.438256 qam23
    135470000009.938256 qam24
    145550000009.538256 qam25
    155630000009.137256 qam26
    16571000000938256 qam27
    17579000000938256 qam28
    185870000008.937256 qam29
    195950000008.837256 qam30
    206030000008.137256 qam31
    216110000007.536256 qam32
    226190000007.536256 qam33
    23627000000837256 qam34
    246350000008.837256 qam35



    Downstream bonded channels

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

    1Locked38.98610
    2Locked38.612750
    3Locked38.913610
    4Locked38.614810
    5Locked38.613750
    6Locked38.614400
    7Locked38.615390
    8Locked38.618010
    9Locked38.620210
    10Locked38.626810
    11Locked38.623720
    12Locked38.624440
    13Locked38.627110
    14Locked38.634410
    15Locked37.642890
    16Locked38.645370
    17Locked38.647810
    18Locked37.356560
    19Locked37.677250
    20Locked37.6162070
    21Locked36.6415280
    22Locked36.6426240
    23Locked37.3194070
    24Locked37.690640

    Upstream bonded channels

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

    12360000238.3512016 qam9
    23659999739.3512016 qam3
    34310004739.8512016 qam2
    43010105338.8512016 qam4
    54960001540.5512016 qam1



    Upstream bonded channels

    Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

    1ATDMA004710
    2ATDMA00130
    3ATDMA0030
    4ATDMA00840
    5ATDMA0000

     

  • pks01's avatar
    pks01
    Joining in
    11 months ago

    Network Log

    Time Priority Description

    17/08/2024 01:04:6criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    01/01/1970 00:02:1Warning!ToD request sent - No Response received;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 19:36:44criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 19:31:25noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 11:17:34criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 11:02:54noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 11:00:57criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 11:00:53criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 10:57:59criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 10:57:42criticalTFTP file complete - but missing mandatory TLV;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    01/01/1970 00:02:37Warning!ToD request sent - No Response received;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 10:51:48criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 10:48:59noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 10:42:34criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 10:41:38noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 10:41:6Warning!LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 10:19:54criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 10:18:2noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 10:14:7criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
    16/08/2024 10:13:34criticalREG RSP not received;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
  • pks01's avatar
    pks01
    Joining in
    11 months ago

    Downstream bonded channels

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

    145100000010.938256 qam12
    245900000010.938256 qam13
    34670000001138256 qam14
    44750000001138256 qam15
    548300000011.438256 qam16
    649100000011.638256 qam17
    749900000011.438256 qam18
    85070000001138256 qam19
    951500000010.938256 qam20
    1052300000010.538256 qam21
    1153100000010.538256 qam22
    1253900000010.438256 qam23
    135470000009.938256 qam24
    145550000009.538256 qam25
    155630000009.137256 qam26
    16571000000938256 qam27
    17579000000938256 qam28
    185870000008.937256 qam29
    195950000008.837256 qam30
    206030000008.137256 qam31
    216110000007.536256 qam32
    226190000007.536256 qam33
    23627000000837256 qam34
    246350000008.837256 qam35



    Downstream bonded channels

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

    1Locked38.98610
    2Locked38.612750
    3Locked38.913610
    4Locked38.614810
    5Locked38.613750
    6Locked38.614400
    7Locked38.615390
    8Locked38.618010
    9Locked38.620210
    10Locked38.626810
    11Locked38.623720
    12Locked38.624440
    13Locked38.627110
    14Locked38.634410
    15Locked37.642890
    16Locked38.645370
    17Locked38.647810
    18Locked37.356560
    19Locked37.677250
    20Locked37.6162070
    21Locked36.6415280
    22Locked36.6426240
    23Locked37.3194070
    24Locked37.69064

    0

     

    Upstream bonded channels

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

    12360000238.3512016 qam9
    23659999739.3512016 qam3
    34310004739.8512016 qam2
    43010105338.8512016 qam4
    54960001540.5512016 qam1



    Upstream bonded channels

    Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

    1ATDMA004710
    2ATDMA00130
    3ATDMA0030
    4ATDMA00840
    5ATDMA0000
  • carl_pearce's avatar
    carl_pearce
    Superstar
    11 months ago

    Power levels, mostly, too high on the downstream, and QAM values on the upstream show why you are seeing a large number of T3 timeouts, and will be the reason why you have a slow upload speed.

    Needs looking into further by VM.

    • pks01's avatar
      pks01
      Joining in
      11 months ago

      Engineer has done something in the street, and upload is restored to 25Mbps. Upstream 64 qam.

      No change to downstream power levels.

      • Robert_P's avatar
        Robert_P
        Icon for Forum Team rankForum Team
        10 months ago

        Hi pks01

         

        Thanks for posting in regards to your connection and issues, we understand the concern and you taking time to let us know via the forums.

         

        In your last post, you mentioned an engineer visit, do you know what work they completed during the visit? Even though it's been a few days since your post and it can take a couple of days for things to settled down, the downstream power levels are higher than what we'd expect to see.

  • pks01's avatar
    pks01
    Joining in
    11 months ago

    Do they monitor these forums, or do I have to find some way of contacting them?

    • pks01's avatar
      pks01
      Joining in
      11 months ago

      Yes, I go there (web link), enter my postcode and name, and I get the message that appeared when I first tried fault-checking on Friday morning.