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    DHCP FAILED

    Scheduled Pinned Locked Moved Solved
    FOG Problems
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    • J
      jeremyvdv
      last edited by

      this is what I have:

      4b38e36a-98e5-4fe8-b4c0-32932e8ec21c-image.png

      george1421G 1 Reply Last reply Reply Quote 0
      • george1421G
        george1421 Moderator @jeremyvdv
        last edited by george1421

        @jeremyvdv Ok from the picture the network adapter appears to be UP as well as we can see a link light. I can see the driver is loaded and is talking to the card because we have a mac address.

        At the FOS Linux command prompt lets key in this /sbin/udhcpc -i enp0s25 --now and see if we can pick up an IP address now.

        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

          That’s it

          cd9b701f-e5ac-4238-ad21-23c597591f38-image.png

          george1421G 1 Reply Last reply Reply Quote 0
          • S
            Sebastian Roth Moderator
            last edited by

            @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)

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            • J
              jeremyvdv
              last edited by

              how to explain that works on a Spanning TREE problem?

              Tom ElliottT 1 Reply Last reply Reply Quote 0
              • Tom ElliottT
                Tom Elliott @jeremyvdv
                last edited by

                @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

                  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

                  1 Reply Last reply Reply Quote 0
                  • george1421G
                    george1421 Moderator @jeremyvdv
                    last edited by

                    @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

                      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

                      george1421G 1 Reply Last reply Reply Quote 0
                      • george1421G
                        george1421 Moderator @jeremyvdv
                        last edited by

                        @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

                          Not at the moment but I will find that.

                          I keep you informed

                          1 Reply Last reply Reply Quote 0
                          • J
                            jps
                            last edited by

                            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.

                            1 Reply Last reply Reply Quote 0
                            • J
                              jeremyvdv
                              last edited by

                              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

                              1 Reply Last reply Reply Quote 0
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