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DHCP FAILED

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FOG Problems
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  • S
    Sebastian Roth Moderator
    last edited by Nov 21, 2019, 2:54 PM

    @george1421 @jeremyvdv Probably a spanning tree issue?!

    Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

    Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

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    • J
      jeremyvdv
      last edited by Nov 21, 2019, 2:55 PM

      how to explain that works on a Spanning TREE problem?

      T 1 Reply Last reply Nov 21, 2019, 2:58 PM Reply Quote 0
      • T
        Tom Elliott @jeremyvdv
        last edited by Nov 21, 2019, 2:58 PM

        @jeremyvdv Spanning tree enables the ports to wait for a period of time between link up/link down before the switch will pass the information to the machine in case there’s a link connected back to itself on the switch.

        This up/down time can be around 27 seconds in normal Spanning tree mode. This would explain why during the automated portion the device cannot get a link or IP, but once at the terminal and restarting the networking it will pick it up.

        If your network is using spanning tree, if you can do so, disable it, or if not it’s best to use one of the Fast/Rapid stp methodologies as their up/down time is much more significantly reduced.

        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! Get in contact with me (chat bubble in the top right corner) if you want to join in.

        Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

        Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

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        • J
          jeremyvdv
          last edited by Nov 21, 2019, 3:04 PM

          do you want to find out by
          “or if not it’s best to use one of the Fast/Rapid stp methodologies as their up/down time is much more significantly reduced.”

          Thanks

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          • G
            george1421 Moderator @jeremyvdv
            last edited by Nov 21, 2019, 3:04 PM

            @jeremyvdv said in DHCP FAILED:

            That’s it

            This is what I wanted to see, to see if TIME fixed the problem. As the others have said its probably a spanning tree issue. Check with your network infrastructure people to see if they can turn on one of the fast spanning tree protocols on your network switches.

            Another test would be to place a dumb (umanaged cheap switch) between the building switch and the target computer. If the system boots and imaging fine then its surely is either spanning tree or green ethernet settings causing the problem.

            I do find it strange that if it is spanning tree, why didn’t the dell have the same problem? Is the dell possibly plugged into a different network switch?

            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!

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            • J
              jeremyvdv
              last edited by Nov 21, 2019, 3:11 PM

              No The dell is on the same switch.

              That’s why I have a doubt about the idea of ​​the spanning tree.

              And I’m pretty sure the spanning tree is off

              G 1 Reply Last reply Nov 21, 2019, 3:18 PM Reply Quote 0
              • G
                george1421 Moderator @jeremyvdv
                last edited by Nov 21, 2019, 3:18 PM

                @jeremyvdv Do you have an inexpensive unmanaged switch you can place between the target computer and the building switch to test?

                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!

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                • J
                  jeremyvdv
                  last edited by Nov 21, 2019, 3:20 PM

                  Not at the moment but I will find that.

                  I keep you informed

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                  • J
                    jps
                    last edited by Nov 21, 2019, 4:50 PM

                    I have had the same problem with two machines. I found out that it came from the flow of the lan. I’ve had to decrease it to 100 Mb/s and it works after that. A suggestion.

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                    • J
                      jeremyvdv
                      last edited by Nov 22, 2019, 9:44 AM

                      Hello

                      This is a problem of config switch.
                      It’s a swtich Level3.

                      On one AC port works and not on the other.

                      I send you the config of its ports for info

                      Thank you for your help

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