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TFTP Open Timeout

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FOG Problems
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  • B
    Brendan Clemente
    last edited by Aug 22, 2019, 4:17 PM

    Good afternoon good people,

    I’ve set up a few fog servers in the past few months on a couple of Raspberry Pi 3 B+ and have had few to no issues for the most part. The company I work for however is in the process of a network equipment infrastructure upgrade. We are moving to Fortinet switches and firewalls. I am working on testing the fog server on this new equipment but I am running into an issue:

    The Raspberry Pi is pulling IP 10.99.98.50 from our DHCP server at 10.99.98.1. During setup I’m using:
    Network Adapter: Eth0
    DHCP Server: 10.99.98.1
    DNS: 10.20.8.74
    Use FOG as DHCP: No

    I’ve had our infra team set option 66 to 10.99.98.50 and option 67 to undionly.kpxe.

    The setup works well, no issues getting into the management console. I added the client I am testing with. Now, when I go to capture an image, the Computer PXE boots, searches for DHCP, shows that it found the DHCP server then searches for TFTP and fails.

    It searches for a few seconds for TFTP requests then says PXE-E32: TFTP open timeout

    I’ve tried restarting the tftpd-hpa service, status says its ok. Tried reinstalling FOG multiple times, tried wiping my RPi and reinstalling the OS fresh and reinstalling FOG fresh. I’m not too terribly experienced with this so could somebody help me to determine where I’m going wrong? Could it be a firewall issue maybe?

    Thank you in advance!

    G 1 Reply Last reply Aug 22, 2019, 4:21 PM Reply Quote 0
    • B
      Brendan Clemente
      last edited by Aug 22, 2019, 7:46 PM

      Next Server IP address was wrong on DHCP server. TFTP is working now! Thank you @george1421

      1 Reply Last reply Reply Quote 1
      • G
        george1421 Moderator @Brendan Clemente
        last edited by Aug 22, 2019, 4:21 PM

        @Brendan-Clemente You will find that firewall’s don’t make great dhcp servers.

        If the fog server is on the same subnet as the pxe booting client and the dhcp server lets use this tutorial to capture a pcap of the pxe boot: https://forums.fogproject.org/topic/9673/when-dhcp-pxe-booting-process-goes-bad-and-you-have-no-clue

        Upload the pcap to a file share site and then post the link here. I’ll take a look a what the pxe client is seeing.

        One other note, the IP address of your fog server must never change or you will have a sad fog server.

        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!

        B 1 Reply Last reply Aug 22, 2019, 4:24 PM Reply Quote 0
        • B
          Brendan Clemente
          last edited by Aug 22, 2019, 4:21 PM

          FOG TFTP Issue.JPG

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          • B
            Brendan Clemente @george1421
            last edited by Aug 22, 2019, 4:24 PM

            @george1421 The DHCP server is actually set up on the switch itself. Sorry for the confusion. Let me get that capture for you now. And yeah I had an issue previously where I tried to switch the IP and found that in some places the new IP took and in others it was still trying to use the old IP. Since I’ve set up the RPi with a fresh install of Raspbian the IP of the fog server has not changed from 10.99.98.50.

            1 Reply Last reply Reply Quote 0
            • B
              Brendan Clemente
              last edited by Aug 22, 2019, 5:10 PM

              @george1421 Sorry for the delay, you can find the output.pcap file at the following link: https://we.tl/t-rfJtwU2wsu

              Let me know if this is not correct and I can try again.

              B 1 Reply Last reply Aug 22, 2019, 5:15 PM Reply Quote 0
              • B
                Brendan Clemente @Brendan Clemente
                last edited by Brendan Clemente Aug 22, 2019, 11:16 AM Aug 22, 2019, 5:15 PM

                @george1421 Also, this was run on the client with IP 10.99.98.51. I believe it is event number 2 on the file in wireshark

                G 1 Reply Last reply Aug 22, 2019, 5:26 PM Reply Quote 0
                • G
                  george1421 Moderator @Brendan Clemente
                  last edited by Aug 22, 2019, 5:26 PM

                  @Brendan-Clemente Look at the FOG chat bubble, I have some questions that will be quicker in chat

                  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!

                  1 Reply Last reply Reply Quote 0
                  • B
                    Brendan Clemente
                    last edited by Aug 22, 2019, 7:46 PM

                    Next Server IP address was wrong on DHCP server. TFTP is working now! Thank you @george1421

                    1 Reply Last reply Reply Quote 1
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