Forum Discussion

albatross99's avatar
albatross99
Tuning in
2 years ago

Hub 5, modem mode, signal drops

Hello all

Over the last few months, Wi-Fi signal drops have been happening intermittently all day, every day. It seems to effect every device in the house. 

the Hub connects to a netgear router then onto various wired connections and a Tenda Mesh system.  The live graph has been up and running since last time so I paste that here in case anyone can suggest what cause might be. 


Have reset the system and each part but hasn’t helped. 

thanks in advance 

https://www.thinkbroadband.com/broadband/monitoring/quality/share/a1290607b2ebbc11e0dd7fb25a492d155b8d0ca2

  • Client62's avatar
    Client62
    Alessandro Volta

    With a VM Hub in modem mode the BQM graph plots the responses from the Netgear Router ( not the VM Hub ).

    Wi-Fi is not being provided by the VM Hub, so pay close attention to the functioning of the Tenda Mesh, exactly what happens when the Wi-Fi drops out ? E.g. is that the Mesh is dropping the Wi-Fi signal to change channels ?

    Hub Signal Level Checks

    Via http://192.168.0.1/ connect to the Hub in Router mode, do not login in, scroll down to "Check router status"     Use http://192.168.100.1/ for a Hub in Modem mode

    Using the Hub's "Check router status" tabs check the Downstream and Upstream power levels are in spec.

    ( If already logged in to the Hub menu, the same info is available at : Advanced settings >>> Tools >>> Network status )

    Downstream Power Levels of -7 to +7 dBmV are preferred, +10dBmV is the max acceptable, with a SNR of 33dB or higher across all DOCSIS 3.0 channels. Rising error counts across many channels is a current service noise fault.

    Upstream
    Power Levels of 35 to 49 dBmV are preferred, with QAM 64 Modulation mode across all four to six DOCSIS 3.0 channels.  Seeing QAM 32/16/QPSK is a current service noise fault.  Seeing less than four DOCSIS 3.0 channels is usually a signal level fault.



    • albatross99's avatar
      albatross99
      Tuning in

      Thank you. I will try this tomorrow and let you know how I get on. 

  • legacy1's avatar
    legacy1
    Alessandro Volta

    Problem might be your wifi BQM looks ok to your router

    set wifi to use channel 13 on 2.4GHz and 52 on 5GHz

  • Hello albatross99.

    Thanks for bringing this to our attention.

    I have just ran a test on the hub from here and can see we have 1 channel issue on your downstream levels.

    Also 3 channels on the upstream levels are out of the required range.

    It would need one of our technicians out to adjust these, which I can arrange.

    If you don't mind, I will need to send you a private message to pass security. 
    If you can check the Logo top right of your screen that would be great. 
    Regards     
    Gareth_L
     

  • Not sure if I need to start a new thread but as it’s the same issue…. The intermittent signal drops throughout every day have carried on over last few months but have now noticeably increased in frequency and downtime. 

    Please let me know what steps I need to take to best monitor the system so we can work out what’s happening. 

    system is same set up:

    hub 5 in modem mode; wired connection to netgear router; wired connection from that to Tenda base unit and mesh system off that to two other Tenda wireless stations. 

    • Martin_N's avatar
      Martin_N
      Forum Team

      Hi albatross99,

      Thank you for that information. To be able to look into this further I will private message you now to confirm your details. 

      ^Martin