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dhcp server that broadcasts only to informed mac address

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  • A
    anthony.libert
    last edited by Sep 2, 2015, 7:37 AM

    Hello everybody,

    I wish the dhcp server will boot PXE fog when a MAC address of a computer is filled.

    Indeed, currently the dhcp server broadcasts throughout the hotel and starts PCs PXE while I did not add the MAC address of the PC.

    How to do ?

    Thanks

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    • W
      Wayne Workman
      last edited by Sep 2, 2015, 12:44 PM

      Are you refering to Wake On Lan ?

      I should explain a little perhaps - and then explain a few options.

      When a computer is configured in it’s firmware to boot to the network first, It will try that. DHCP hears the request and sends info. The PC confirms it’s received info - there’s a fraction of a second’s wait - then DHCP sends a “Use it” command once no other computer reports “no don’t use that, I’m using that IP”.

      Then the computer network boots to FOG - as it was told. If it is registered - it will look for any active tasks and do those - if there are no tasks it will either (A) Show the boot menu for a specified time and then try to boot to the HDD or (B) not show a menu at all and immediately boot to the HDD.

      Just depends on how you have it configured.

      By default, non-registered hosts will show the menu so that you see it’s not registered. This menu also has a countdown that elapses - after it elapses, the machine tries to boot to the HDD.

      Now - if you don’t like seeing the menu for registered machines - the very best that can be done is to set the timeout to 1 second. You can do that here:
      FOG Configuration -> iPXE Boot Menu -> Menu Timeout (in seconds):*

      Now, do not set this to 0 because 0 makes the menu stay up forever… 1 is as low as you can go.

      @Developers is that normal? 0 causing the menu to just stay up?

      Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!
      Daily Clean Installation Results:
      https://fogtesting.fogproject.us/
      FOG Reporting:
      https://fog-external-reporting-results.fogproject.us/

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