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  1. #1
    New Lounger
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    Cable / DUN conflict (Windows XP)

    I connect to my office computer via a dial-up connection (DUN), but otherwise use a cable connection to connect to the internet. While connected to the dial-up connection, Internet Explorer (and I assume any other browser) tries unsuccessfully to use the DUN rather than the cable connection. Is it possible to force Explorer to use the cable connection instead of the DUN?

  2. #2
    Plutonium Lounger
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    Re: Cable / DUN conflict (Windows XP)

    You can do this by manually configuring routes with the Route Add command.

    The easiest method is to configure Internet Explorer to use your ISPs Proxy Server and then you just need to add a single route for the proxy server via the cable IP address, using a syntax like.

    ROUTE ADD 200.200.200.200 MASK 255.255.255.255 192.168.10.10

    Where 200.200.200.200 is the IP address of the ISP's proxy server and 192.168.10.10 is the IP address of your cable modem.

    StuartR

  3. #3
    Plutonium Lounger
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    Re: Cable / DUN conflict (Windows XP)

    Stuart, I'm sure you're right with that routine, but may I ask you something please? I haven't done this since I retired and especially since I installed XP. If one goes in to the Control Panel, Internet Options, Connections and checks the radio button that says NEVER DIAL, won't that fix this problem? Seems like that's all I did when I was running Win98SE. I also had a 24/7 DSL connection and would occasionally use my modem to dialup to my work location. I don't remember having this problem. Am I dreaming?

  4. #4
    Plutonium Lounger
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    Re: Cable / DUN conflict (Windows XP)

    Al,

    The issue was
    <hr>While connected to the dial-up connection, Internet Explorer (and I assume any other browser) tries unsuccessfully to use the DUN rather than the cable connection<hr>
    In these circumstances there are two valid IP interfaces and the routing table is used to determine which one is selected for each remote connection.

    Selecting "Never Dial" will ensure that the cable connection is used when making normal requests, but after manually connecting the DUN interface, Windows will create a default route via that interface.

    StuartR

  5. #5
    New Lounger
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    Re: Cable / DUN conflict (Windows XP)

    Thanks for the info. Is that something that will have to be done everytime I want to use this configuration? Because I'm trying to figure this out for my wife, who would not do that if her life depended it on it. <img src=/S/flee.gif border=0 alt=flee width=25 height=25>

  6. #6
    Uranium Lounger
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    Re: Cable / DUN conflict (Windows XP)

    Stuart -

    Correct me if I'm wrong, but I seem to recall that in Win2000 and XP there was a way to prevent Windows from creating a new default route. Maybe I'm just dreaming, but if you could clarify that for me I would appreciate it.
    -Mark

  7. #7
    Plutonium Lounger
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    Re: Cable / DUN conflict (Windows XP)

    Sorry for the long delayed response, I have been away. You would have to set up the route every time you restarted the computer, but this could be done with a BAT file in your startup folder.

    StuartR

  8. #8
    Plutonium Lounger
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    Re: Cable / DUN conflict (Windows XP)

    You certainly can prevent DUN from setting up a new default route, you could even do this on Windows 98. On W2K it is done from the properties for the specific Dial Up Networking connection, TCP/IP > Properties > Advanced > "Use default gateway on remote network". If you clear this check box then nothing will use the DUN connection unless you set up specific static routes.

    As soon as you have two interfaces you need to manage your routes. You have one default route and everything will use it, except for specific routes that you configure.

    StuartR

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