Mac Pro with 2 LAN ports and 2 PCs.

Discussion in 'macOS' started by donjao, Aug 3, 2008.

  1. donjao macrumors member

    Apr 21, 2008
    Dear friends,

    I've been trying to set up 2 different networks, actually to connect my Mac Pro with to two PCs. Well, I can't get my Mac to have access to the PC that is plugged into 2nd Ethernet port. However, if I unplug one of the cords, no matter what port it is 1 or 2, it works and sees connected PC.

    My IP addresses are set manually to and NetBIOS names are also different MACPRO and MACPRO2. Subnet mask is Rest is not changed from defaults. And only 1 Ethernet interface sees the PCs.

    Could anyone suggest me something? Cos I really wanna have my Mac to be connected to these PCs.

    Thanks in advance.
  2. bplein macrumors 6502


    Jul 21, 2007
    Austin, TX USA
    Most computers have problems if you have 2 different Ethernet ports on the same subnet number. One of the two will be the default port for items on that subnet.

    Easiest thing to do is to use a switch to connect all 3 computers.

    If you don't want to do that, then give one PC and the one Mac port a 192.168.0.x. addressing scheme, and the other a 192.168.1.x scheme (both and be done with it.

Share This Page