Two NICs, different IPs, same ISP

Discussion in 'Installation/Configuration' started by minimalist, Feb 1, 2010.

  1. minimalist

    minimalist Member

    We have a DELL PowerEdge with two NICs.

    eth0 xx.xx.166.46 is an IP part of a class routed trough xx.xx.74.33 (a ZyXEL router).
    eth1 xx.xx.74.34 is directly connected to the ISP.

    Code:
    auto eth0
    iface eth0 inet static
            address xx.xx.166.46
            netmask 255.255.255.248
            network xx.xx.166.40
            broadcast xx.xx.166.47
            gateway xx.xx.166.42
    
    auto eth1
    iface eth1 inet static
           address xx.xx.74.34
           netmask 255.255.255.0
           network xx.xx.74.0
           broadcast xx.xx.74.255
           gateway xx.xx.74.1
    
    We can not up both interfaces because for some reason they can't work together.

    I'm sure this is yet another routing problem but help would be very appreciated.
     
  2. falko

    falko Super Moderator ISPConfig Developer

    Are these private or a public IPs? Do you get any error messages when you restart the network?
     
  3. minimalist

    minimalist Member

    Both xx.xx.166.46 and xx.xx.74.34 are public.
    xx.xx.166.46's gateway xx.xx.166.42 is routed by xx.xx.74.33.
     
  4. falko

    falko Super Moderator ISPConfig Developer

    Do you get any error messages when you restart the network?
     
  5. minimalist

    minimalist Member

    None at all.

    Fact is you can not have two default gw as the above setup configures the server.

    My question is, what routing options do I have?
    If I route default (0.0.0.0) trafic for one gw, how can I also use the other gw?
     

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