Forum Discussion

alphaklg's avatar
alphaklg
On our wavelength
27 days ago

HUB 4 loosing Internet connection

Since today having issues with HUB 4 :

I use it in modem mode (been like that for over a year, never had issues). This morning noticed not any device could access internet .

Rebooting the HUB sorted the issue for a couple of hours then issue appeared again. So every couple of of hours the HUB needs rebooting.

I tried to log into the HUB (wired)  i spotted a strange ip assigned to my device in 169.254.xx.xx, and i could get to the admin page via HTTP. after reboot it went back to 192.168.100 and could log in.

The hub keep its green light all the time, like there were no issues.

What the hell is going on, why the hub is doing that?  

Broadband
Connection
hub4
Internet
router

7 Replies

  • legacy1's avatar
    legacy1
    Alessandro Volta
    27 days ago

    Is the hub in modem mode? 

    Do you have a router to the hub? what is it? 

    Connect just a PC to the hub in modem mode when working connect PC to your router and change in WAN settings the WAN  MAC to your PC MAC then connect router to hub.

    If 169.254.xx.xx was assigned to your device that mean DHCP failed but that would be on your router? is your router LAN 192.168.0.x ?

    • alphaklg's avatar
      alphaklg
      On our wavelength
      27 days ago

      It was when i connected directly via cable with a laptop to the hub lan port. 

      My ASUS router was even switched off when i did it so no wifi interference, it s really from the hub. 

      I launched a monitoring tool from the internet towards the hub and see it looses connection to it until i reboot

      [MOD EDIT: Image removed due to containing private information]

    • alphaklg's avatar
      alphaklg
      On our wavelength
      26 days ago

      Any ideas? sorry for the confusion. I got disconnected whilst typing in

  • alphaklg's avatar
    alphaklg
    On our wavelength
    27 days ago

    The hub is in modem mode, i connected my laptop vua cable diectly to the hub lan port, switched the asus router off to avoid any wifi interferences.

    So the hub failed dhcp then, i could even not access the web  maintenance page wired to it, only after reboot.

    From the internet this us the situation 

    The HUB had an update 3 days ago as a surprise.

    [MOD EDIT: Image removed due to containing private information]

  • alphaklg's avatar
    alphaklg
    On our wavelength
    27 days ago

    Hello,

    So i connect directly my laptop to the HUB 4 ETH port via a cable, my external router is not in play here i switched it off for the test. 

    1. Initially when connected by cable i could not access 192.168.100.1
    2. I could not ping the address 192.168.100,1
    3. My assigned ip was the one in 169.254.xx.yy
    4. Rebooting the HUB i could ping and access 192.168.100.1 and my IP was 192.168.100.4

    Steps above i can repeat every time the issue happen.

    I set an internet monitor to see what happened over time :

    [MOD EDIT: Image removed due to containing private information]

     

    • Adduxi's avatar
      Adduxi
      Very Insightful Person
      26 days ago
      alphaklg wrote:

      So i connect directly my laptop to the HUB 4 ETH port via a cable, my external router is not in play here i switched it off for the test. 

      Wrong.  Disconnect the Router and reboot the Hub with only the laptop connected.

      alphaklg wrote:

      My assigned ip was the one in 169.254.xx.yy

      That would be entirely possible, the laptop didn't get an address and windows just used a self assigned IP address.

      alphaklg wrote:

      Rebooting the HUB i could ping and access 192.168.100.1 and my IP was 192.168.100.4

      This is also wrong.  The IP on the laptop should be a VM WAN address.  You possibly need to leave the Hub switched off for around 5 minutes before powering back on with the laptop connected.  The VM CMTS does remember the last MAC address, so if you don't disconnect the Router and leave enough time before powering back on, your laptop will not get a WAN IP address.

  • alphaklg's avatar
    alphaklg
    On our wavelength
    26 days ago

    Just notice i have 1 docsis 3.1 downstream channel and 0 docsis 3.1 upstream channels strange ?