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Thread: Windows 7 refuses DHCP addresses if they are assigned to another adapter

  1. #1
    Join Date
    Jan 2011
    Posts
    39

    Windows 7 refuses DHCP addresses if they are assigned to another adapter

    I have two adapters - local area network (LAN) and Wireless LAN. If only local area network (LAN) is enabled, after that it will get an Internet protocol address just well. If I disable local area network (LAN) and enable Wireless LAN, that will as well acquire an Internet protocol address. On the other hand, if I unplug the local area network (LAN without enabling it and enable the local area network (LAN, the Wireless LAN is not accepting the Internet Protocol address which it is offered (I can observe the DHCP server repeatedly offering the accurate address; Windows 7 does not acknowledge it). If I after that disable the disconnected local area network (LAN) connection the Wireless LAN connection will lastly recognize the address it is being offered. How can I alter this behavior as a result the Wireless LAN will recognize an address the moment it is offered?

  2. #2
    Join Date
    Mar 2009
    Posts
    1,221

    Re: Windows 7 refuses DHCP addresses if they are assigned to another adapter

    I would imagine that would be a problem by means of the router firmware not Windows 7, that is the lease time of the Internet Protocol address. Have you attempted a easy release or renew command? Go to Start menu and select Run as well as type cmd /k ipconfig / for the command syntax. Why do you desire to allocate the similar Internet protocol address to both adapters that is wired and wireless, on a laptop to start with?

  3. #3
    Join Date
    Jan 2011
    Posts
    39

    Re: Windows 7 refuses DHCP addresses if they are assigned to another adapter

    Thanks for your suggestion I have tried different release and renew alternative, to no benefit (even though sure having to perform a manual ipconfig/<somewhat>" at what time unplugging a network cable). It is not a router problem - other laptops are running Windows XP home premium, various edition of Linux are set up in accurately this means with no troubles. I can observe the DHCP server presenting the address - for several reason it is not accepting it. What would be helpful will be a method of filtering DHCP client. On the other hand, while seeing into this I did observe fairly a few posts here and somewhere else saying that "Windows 7 / Vista does not recognize DHCP addresses" - I wonder if any of those are associated?

  4. #4
    Join Date
    May 2008
    Posts
    1,304

    Re: Windows 7 refuses DHCP addresses if they are assigned to another adapter

    You cannot organize the DHCP server on the way to offer the similar Internet Protocol to two MAC numbers that is puzzling to the device.Allocate a unique Internet Protocol address to each network card by means of its own MAC.Organize the Metrics of the wire TCP/IP (Transmission Control Protocol/Internet Protocol) to a lower number than the Wireless.Aat what time the Wire is plugged in, it will favor the wire connection, once you unplug the wire the Wireless will boot in automatically.

  5. #5
    Join Date
    Jun 2009
    Posts
    1,112

    Re: Windows 7 refuses DHCP addresses if they are assigned to another adapter

    I have the similar trouble and it is not a trouble of dhcp server because the Internet Protocol I still presented to a client Dhcp is able to be configured to map the similar Internet Protocol for multiple mac address! And it is sensible as well as helpful. Windows does not apparent the Internet Protocol info for the interface that was disconnected yet if command ipconfig /releas are issued. Windows apparent the Internet Protocol info if the interface that was disconnected is disabled followed by enabled. So How to force Windows to clear Internet Protocol information intended for disconnected media and I have not found any register key value to alter this odd behavior. I am not certain if it is a driver precise.

  6. #6
    Join Date
    Jul 2009
    Posts
    1,118

    Re: Windows 7 refuses DHCP addresses if they are assigned to another adapter

    Many of issues similar to this are counting on Network devices which are in reality conforming severely to standards. Entry level Routers make used by 99% of the public that post here cost x10 times less as compare to Pro Network Devices. Alongside poor Quality assurance, the devices do not remain severely to standards. The excellent part of it is that the costs permit people to take pleasure of affordable home networking. On the other hand at whatever time end-users start to diverge from simple and start to control their Network devices the low value lift up its “ugly face”.

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