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Thread: Ethernet wired but no connection

  1. #11
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    Re: Ethernet wired but no connection

    That's also your mac's MAC (hardware) address. The IP address (as mentioned) should look something like 192.168.0.5 - another option for addressing is to configure static address in /etc/network/interfaces.
    I haven't tried setting up IPv6 networking yet ( that's the fe80::...).
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  2. #12
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    Re: Ethernet wired but no connection

    Well I got the two connected using oldfreds instructions! lightning fast file sharing, 100mb went across before I had time to blink.

    Then this morning I switched both on and the connection was lost, so close...

    I'd set up a static ip address on my macs ethernet connection, 192.168.2.5

    My Revo's static ethernet address is 192.168.2.6

    Any idea why it would have been working and then just not? also I noticed that when I first booted my Revo this morning I had to manually connect the wired connection via network manager, the wireless connects automatically. Can both be set to start up automatically?

    Thanks for your time by the way, really appreciate your help with this.

  3. #13
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    Re: Ethernet wired but no connection

    Slight update & progress...!

    My Revo now connects to the imac using ethernet so file transfer etc is perfect.

    The knock on effect of this is that having a wired connection & a wireless connection running simultaneously breaks my internet connection. If I disconnect the wired link via network manager internet springs back into life. I'm guessing that the wired connection is overriding the wireless one?
    Last edited by JUICE690; February 16th, 2010 at 10:58 PM.

  4. #14
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    Re: Ethernet wired but no connection

    That may be a function of NM - previous versions (at least) would only manage one active interface (although my Jaunty laptop has had wired/wireless active at the same time. It was normal to set up one interface via /etc/network/interfaces (usually the wired one).
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  5. #15
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    Re: Ethernet wired but no connection

    Quote Originally Posted by Iowan View Post
    That may be a function of NM - previous versions (at least) would only manage one active interface (although my Jaunty laptop has had wired/wireless active at the same time.
    You'd think with mine running on Karmic Koala that it would be able to do the same.
    Quote Originally Posted by Iowan View Post
    It was normal to set up one interface via /etc/network/interfaces (usually the wired one).
    Would you mind explaining how I'd go about doing that? I have the interface file open, right now mine just says:

    auto lo
    iface lo inet loopback


    My Revo's ethernet address is 192.168.2.7
    Broadcast address: 192.168.2.255
    Subnet Mask: 255.255.255.0
    Default Route: 192.168.2.8
    Primary DNS: 192.168.2.8
    Last edited by JUICE690; February 17th, 2010 at 12:18 AM.

  6. #16
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    Re: Ethernet wired but no connection

    You can always "comment out" (#) or delete these changes if they don't work.
    Use sudo -e /etc/network/interfaces (or if you'd prefer a graphical editor: gksudo gedit /etc/network/interfaces) to make the file look:
    Code:
    auto lo
    iface lo inet loopback
    
    auto eth0
    iface eth0 inet static
    address 192.168.2.7
    netmask 255.255.255.0
    #network 192.168.2.0
    #broadcast 192.168.2.255
    The last two lines are probably unnecessary - so they're commented out already. With only the one machine on the network, you probably won't need the gateway or DNS server. Save the changes and restart or reboot (I prefer a reboot to re-sync networking and NM).

    One caveat I just realized - if wireless is also using the 192.168.2.0 network, this may not work. Two interfaces in the same subnet plays havoc with routing... But, you could change the wired addresses on both machines to a different subnet - say... 192.168.3.0
    Last edited by Iowan; February 17th, 2010 at 12:41 AM.
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  7. #17
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    Re: Ethernet wired but no connection

    With the following settings:

    auto lo
    iface lo inet loopback

    auto eth0
    iface eth0 inet static
    address 192.168.3.0
    netmask 255.255.255.0
    #network 192.168.3.1
    #broadcast 192.168.2.255

    I don't get any ethernet networking. I have my internet connection back. I've tried uncommenting network & broadcast (is network another description for default route?) but still no joy.

  8. #18
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    Re: Ethernet wired but no connection

    Oh, hold up, it seemed to just kick into life, I'm just rebooting both machines now to see if it continues working...

  9. #19
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    Re: Ethernet wired but no connection

    Just realised it was networking via wireless! As soon as I switched off the wireless connection I lost the network to the mac (and vice-versa)

    Darn.

  10. #20
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    Re: Ethernet wired but no connection

    I saw a thread awhile back that used a gateway of 0.0.0.0
    "network" is the subnet "base" - usually ends with .0
    "broadcast" is usually the other end - the highest address in the subnet. With subnet mask of 255.255.255.0 (CIDR notation is /24), that address would be .255
    Your machines could use any addresses excluding those two. Routers usually use .1, but you won't have one.
    As an example:
    Code:
    auto eth0
    iface eth0 inet static
    address 192.168.3.1
    netmask 255.255.255.0
    network 192.168.3.0
    broadcast 192.168.3.255
    gateway 0.0.0.0
    No guarantees that this'll work either - last line in particular. You'll also need to set up the other machine in the same (192.168.3.X?) subnet.
    Last edited by Iowan; February 17th, 2010 at 02:17 AM.
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