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anthonyqkiernan's avatar
anthonyqkiernan
Joining in
2 years ago
Solved

Macbook/Ethernet adapter/Hub 3 - No DHCP

I have an USB-C hub with ethernet.  I have keyboard, mouse, power (usb-c), hdmi and ethernet connected to it.  Plugged into my work laptop (Lenovo notepad) everything works straight off as expected.  When I plug it into my Macbook Air (M2 running Sonoma 14.1.2) I cannot connect to the ethernet.  Everything else works fine

When I go into the network settings I can see a self-assigned IP address.  Which I believe means something isn't working with the DCHP. 

The network light is on on the usb-hub.  Logging into the Hub 3 shows (I think) that it's connected too.   (The other device is NAS drive)

Any ideas how to get this working?

I've tried manually replicating the IP addresses from the wifi.  Which gives me a greent 'connected' light.  But no actual connection

 

  • Client62's avatar
    Client62
    2 years ago

    Use the settings as mentioned above but do use:  IP 192.168.0.77 or even try IP 192.168.0.177

    The IP must differ from all those in recent use by the Hub 3 DHCP server.

  • legacy1's avatar
    legacy1
    Alessandro Volta
    2 years ago

    Well do we know the ethernet port work is one thing or bad cable

    setup a fixed IP with the following

    IP 192.168.0.77

    subnet 255.255.255.0

     gateway 192.168.0.1

    DNS 194.168.4.100 and 194.168.8.100

    do ping 192.168.0.1

    • anthonyqkiernan's avatar
      anthonyqkiernan
      Joining in
      2 years ago

      "I've tried manually replicating the IP addresses from the wifi. Which gives me a green 'connected' light. But no actual connection"

      Those settings are the same as yours, except the IP address.  I've tried with your sugestion and get the same result

      Edit: forgot to do the ping.  Restarted to do so, and it's working (on the manually entered same IP as was allocated to my Windows laptop - I don't know if that's relevant will mess about with the address later)

  • Client62's avatar
    Client62
    Alessandro Volta
    2 years ago

    Has the MACBOOK ever worked with the Ethernet adaptor of the USB-C Hub ?

  • Client62's avatar
    Client62
    Alessandro Volta
    2 years ago

    Use the settings as mentioned above but do use:  IP 192.168.0.77 or even try IP 192.168.0.177

    The IP must differ from all those in recent use by the Hub 3 DHCP server.

    • anthonyqkiernan's avatar
      anthonyqkiernan
      Joining in
      2 years ago

      Getting that same green 'conected' dot but no actual connection. For both of those options.  I've tried various random addresses too.  Plus using the one that's been allocated to the windows laptop that's working with the hub.  All the same

      Edit: forgot to do the ping mentioned above. Restarted to do so, and it's working (on the manually entered same IP as was allocated to my Windows laptop - I don't know if that's relevant will mess about with the address later)

  • Client62's avatar
    Client62
    Alessandro Volta
    2 years ago

    For a static IP we need a valid Gateway / Mask / DNS - the IP can be in the 192.168.0.xxx range.

    Now you have confirmed the network connection can work, try setting the IP and DNS allocation back to DHCP/Auto and see if the connection can work without manual settings.

    • anthonyqkiernan's avatar
      anthonyqkiernan
      Joining in
      2 years ago

      No. It’s still getting a self-assigned IP. 

      It’s no longer working with the manually entered values either. Ping is saying host is down

  • anthonyqkiernan's avatar
    anthonyqkiernan
    Joining in
    2 years ago

    For anyone finding themselves here after the same journey of googling as myself.  Please note: The 'fix' above did not hold.  I cannot relicate it again.  I suspect there was some magic combination of plugging/unplugging and stopping/starting that I'm not getting right