Vista grabs first IP in routers range

Discussion in 'Windows Vista Networking' started by Jerry Langley III, Nov 19, 2007.

  1. We have a new laptop with Vista Premium. We used the same account and
    password for the other machines. The issue is that in this peer-to-peer
    network the Vista machine is taking 192.168.1.101 when there is already a
    machine that has been given this IP. I temporarily solved the problem by
    giving my other machines (all XP Pro) static IPs. I do not want to give the
    laptop a static IP so that it can be used at local hot spots.
    Does anyone know why the Vista machine would not just accept the IP given by
    the router?
    Its a Linksys router (b/g) about a year and a half old. I suppose I might
    try updating the firmware, but I think that Vista should just take the IP its
    given and play nice.
     
    Jerry Langley III, Nov 19, 2007
    #1
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  2. Some routers allow you to reserve a specific DHCP assigned IP based on the
    client MAC Address. Check the Linksys admin pages. Its possible a firmware
    upgrade, if one is available, might add that feature. You could also use
    third-party firmware like DD-WRT if your router is supported. DD-WRT calls
    this "Static DHCP"...

    http://www.dd-wrt.com/wiki/index.php/Supported_Devices

    Vista also has an alternate address function that will do what you want.
    Here is an XP article that describes this...

    http://support.microsoft.com/kb/283676

    Lastly a third-party program like NetSwitcher may work for you also...

    http://www.netswitcher.com

    --

    Al Jarvi (MS-MVP Windows Networking)

    Please post *ALL* questions and replies to the news group for the
    mutual benefit of all of us...
    The MS-MVP Program - http://mvp.support.microsoft.com
    This posting is provided "AS IS" with no warranties, and confers no
    rights...
     
    Sooner Al [MVP], Nov 19, 2007
    #2
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  3. I forgot to add you would need to disable the home router DHCP server and
    assign a static IP to your laptop in order to use the alternate function. Of
    course this also presents problems if other guest devices want to connect to
    your network.

    Personally I see no issues using static IP addressing for desktops that
    never move and are on a small home network environment. Its basically set it
    and forget it. Just make sure the static IPs are outside the range the
    routers DHCP server assigns.

    --

    Al Jarvi (MS-MVP Windows Networking)

    Please post *ALL* questions and replies to the news group for the
    mutual benefit of all of us...
    The MS-MVP Program - http://mvp.support.microsoft.com
    This posting is provided "AS IS" with no warranties, and confers no
    rights...
     
    Sooner Al [MVP], Nov 19, 2007
    #3
  4. Thanks Al

    I can do the static IP thing for the fixed machines, as you alluded to there
    guest devices (WII, DS handheld, Pocket PC etc) and I was concerned that
    there may be a collision with the laptop. But the bigger question is why
    this is an issue in the first place. If we take this laptop to a hot spot
    will it try to do the same thing? There is some kind of bug going on here.
     
    Jerry Langley III, Nov 19, 2007
    #4
  5. The DHCP server determines the lease time period. For example the default on
    the current Belkin F5D7230-4 router I use is "Forever" but I can also select
    time periods of a half-hour, one hour, two hours, half day, one day, two
    days, one week or two weeks if I want to. So for example a one hour lease
    may be appropriate for a public hotspot while a home user, like myself, will
    opt for the default. Your router may or may not allow you to control the
    lease period depending on the firmware installed.

    --

    Al Jarvi (MS-MVP Windows Networking)

    Please post *ALL* questions and replies to the news group for the
    mutual benefit of all of us...
    The MS-MVP Program - http://mvp.support.microsoft.com
    This posting is provided "AS IS" with no warranties, and confers no
    rights...
     
    Sooner Al [MVP], Nov 19, 2007
    #5
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