How can I configure my Windows 2003 DC machine to act as a router?

Discussion in 'Windows Networking' started by john, Mar 13, 2006.

  1. john

    john Guest

    I have two different networks: network A ( and network B
    ( I would like to configure a DC (Windows 2003 Server) of
    network B as a router.

    There are two network interfaces on Windows 2003 Server. One of them has
    ip=, gateway= I defined the other's ip as and gateway as (this one is connected to network

    I changed the registry value of Windows 2003 Server as:


    I ran routing commands from the command prompt:

    route add -p mask

    Now I am able to ping Windows 2003 Server from a client machine on network
    A, after running <route add -p mask>

    However, I can not ping any other machine on network B from network A. What
    else should I configure? Do I need to reboot Windows 2003 Server?

    Also, do I have to run routing command on all client machines? Is it
    possible just to define two gateways (one is Windows 2003 Server's related
    network interfaces ip adress, the other is the default gateway of the
    network) on one ip on the client machines of both networks?

    Could anyone help me on this subject?
    john, Mar 13, 2006
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  2. Try:

    1. Get rid of one of the the default gateways on the Windows Server 2003
    machine. This isn't the cause of your problem, but it may cause others.

    2. Get rid of this route: "route add -p mask" - it doesn't serve any purpose.

    3. On subnet A either configure machines with a default gateway of, or:

    route -p add mask

    3. On subnet B either configure machines with a default gateway of or:

    route -p add mask

    Doug Sherman
    Doug Sherman [MVP], Mar 13, 2006
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