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    proxyDHCP Issue

    Scheduled Pinned Locked Moved Unsolved
    FOG Problems
    proxydhcp issue
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    • cmlC
      cml Moderator
      last edited by

      https://ask.wireshark.org/questions/8931/capture-file-appears-to-be-damaged-or-corrupt

      Maybe the issue is tftp defaulting to ASCII? Can you try transfering it with WinSCP?

      Or try using binary mode?

      tftp -i x.x.x.x get issue.pcap
      

      From: https://technet.microsoft.com/en-us/library/Ff698993.aspx?f=255&MSPPError=-2147217396

      Wayne WorkmanW 1 Reply Last reply Reply Quote 1
      • Wayne WorkmanW
        Wayne Workman @cml
        last edited by

        @cml I tested that this works in Win 7 and have updated the “Troubleshoot TFTP” article to reflect binary only.

        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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        Exig3nciE 1 Reply Last reply Reply Quote 0
        • Exig3nciE
          Exig3nci @Wayne Workman
          last edited by

          @Wayne-Workman thanks for the updated
          @cml I’ve followed that step, but I still get the same issue.

          Wayne WorkmanW 1 Reply Last reply Reply Quote 0
          • Wayne WorkmanW
            Wayne Workman @Exig3nci
            last edited by Wayne Workman

            @Exig3nci Try setting the maximum packet size via TCPDump to exactly what the error says…

            262144

            Then after you do a capture with that setting and put the file in the /tftpboot directory, make sure you use binary mode to transfer via TFTP.

            You might also try some older versions of WireShark https://www.wireshark.org/download/win32/all-versions/

            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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            Exig3nciE 2 Replies Last reply Reply Quote 0
            • Exig3nciE
              Exig3nci @Wayne Workman
              last edited by

              @Wayne-Workman So I have an older version of WireShark (1.10.4) I’ve set tftp in binary mode:
              tftp
              tftp> binary
              Ran this command:
              sudo tcpdump -w issue.pcap -i eth0 -c 65535
              But I still get the same issue, The packet limit error on WireShark is capped at 65535, but the command in Ubuntu still runs.
              Am I doing this correct? I have to break the command with Ctrl+C to get it to stop and it still goes over by many bytes.

              1 Reply Last reply Reply Quote 0
              • Exig3nciE
                Exig3nci @Wayne Workman
                last edited by

                @Wayne-Workman I’m also just trying to run WireShark on my VM nic cards from my Windows 7 machine, think that will work?
                wireshark.jpg

                Wayne WorkmanW 1 Reply Last reply Reply Quote 0
                • Wayne WorkmanW
                  Wayne Workman @Exig3nci
                  last edited by

                  @Exig3nci said:

                  @Wayne-Workman I’m also just trying to run WireShark on my VM nic cards from my Windows 7 machine, think that will work?

                  At this point, it’s worth a shot for sure.

                  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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                  • Wayne WorkmanW
                    Wayne Workman @Exig3nci
                    last edited by

                    @Exig3nci I’ve been thinking, and I think it would be worth the time to try to transfer the pcap file via FTP instead of TFTP just to see if it makes a difference or not.

                    Can you please place the pcap file inside of your /images directory and then try to get the file following the instructions found here: https://wiki.fogproject.org/wiki/index.php/Troubleshoot_FTP

                    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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                    • Exig3nciE
                      Exig3nci @Wayne Workman
                      last edited by

                      @Wayne-Workman Yeah, still no luck.
                      Although I got another error message PXE-E32.
                      What does your tftp-hpa file look like?

                      Wayne WorkmanW 1 Reply Last reply Reply Quote 0
                      • Wayne WorkmanW
                        Wayne Workman @Exig3nci
                        last edited by

                        @Exig3nci There is an example here: https://wiki.fogproject.org/wiki/index.php/Troubleshoot_TFTP#Ubuntu:

                        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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                        Exig3nciE 1 Reply Last reply Reply Quote 0
                        • Exig3nciE
                          Exig3nci @Wayne Workman
                          last edited by Exig3nci

                          @Wayne-Workman I’ve been following the website you forwarded to me, but I keep getting the 425 error with ftp.
                          I can exchange files via tftp just fine. I’m able to connect to ftp://ipaddress as well.
                          I’ve changed both the tftp conf file, the ftp conf file, changed permissions, and firewall is turned off, but I still get the same error.
                          Any advice?

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                          • Wayne WorkmanW
                            Wayne Workman
                            last edited by Wayne Workman

                            None of this is making any sense anymore.

                            Please check to see if options 066 and 067 are already set on your switches that handle DHCP.

                            Please check for IP conflicts with your 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!
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                            • Wayne WorkmanW
                              Wayne Workman @Exig3nci
                              last edited by Wayne Workman

                              @Exig3nci Also,

                              Please load a Linux Live CD and try DHCPDump. I just found it through some searching and I think that this is exactly what you need to troubleshoot your issue.

                              http://www.cyberciti.biz/faq/linux-unix-dhcpdump-monitor-dhcp-traffic/

                              I found this in the WiKi, might be worth looking over… https://wiki.fogproject.org/wiki/index.php/Not_passing_PXE,_or_ProxyDHCP...NO_PROBLEM_Cisco#Original_Issue

                              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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                              • Exig3nciE
                                Exig3nci @Wayne Workman
                                last edited by

                                @Wayne-Workman So I got the issue.pcap file to work. It was a matter of putting
                                tftp -i 10.10.8.155 get issue.pcap instead of
                                tftp 10.10.8.155 get issue.pcap (Aiii yaaaa 💢)
                                I’m not seeing any tftp protocols in the wireshark GUI, I’m assuming that it means my tftp config file isn’t setup properly.

                                Wayne WorkmanW 1 Reply Last reply Reply Quote 0
                                • Exig3nciE
                                  Exig3nci @Wayne Workman
                                  last edited by

                                  @Wayne-Workman Also, I was able to get the undionly.0 file through tftp on my windows 7 machine.

                                  1 Reply Last reply Reply Quote 0
                                  • Wayne WorkmanW
                                    Wayne Workman @Exig3nci
                                    last edited by Wayne Workman

                                    @Exig3nci said:

                                    @Wayne-Workman So I got the issue.pcap file to work. It was a matter of putting
                                    tftp -i 10.10.8.155 get issue.pcap instead of
                                    tftp 10.10.8.155 get issue.pcap (Aiii yaaaa 💢)
                                    I’m not seeing any tftp protocols in the wireshark GUI, I’m assuming that it means my tftp config file isn’t setup properly.

                                    Use the filter found here:
                                    https://wiki.fogproject.org/wiki/index.php/TCPDump

                                    Also, begin the TCPDump RIGHT BEFORE you turn on the target machine, and end the dump RIGHT AFTER you see the error.

                                    Then examine the pcap file.

                                    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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                                    Exig3nciE 1 Reply Last reply Reply Quote 0
                                    • Exig3nciE
                                      Exig3nci @Wayne Workman
                                      last edited by

                                      @Wayne-Workman I’m only getting one piece of info when filtering the mac address:
                                      wireshark2.jpg
                                      Am I doing something wrong?

                                      Wayne WorkmanW 1 Reply Last reply Reply Quote 0
                                      • Wayne WorkmanW
                                        Wayne Workman @Exig3nci
                                        last edited by

                                        @Exig3nci Can you try filtering using the target host’s MAC address using this method please?

                                        eth.dst == 00:0C:CC:76:4E:07 || eth.src == 00:0C:CC:76:4E:07
                                        

                                        Please replace the MAC with the target host’s MAC.

                                        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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                                        Exig3nciE 1 Reply Last reply Reply Quote 0
                                        • Exig3nciE
                                          Exig3nci @Wayne Workman
                                          last edited by

                                          @Wayne-Workman Ah, attention to detail… sorry about that.
                                          I’m assuming I have to look at the first one.
                                          wireshark3.jpg
                                          I’m not too sure how to read the packets.

                                          Wayne WorkmanW 1 Reply Last reply Reply Quote 0
                                          • Wayne WorkmanW
                                            Wayne Workman @Exig3nci
                                            last edited by

                                            @Exig3nci Do you only get three packets?? Are you getting this pcap file from the FOG server itself?

                                            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/
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                                            Exig3nciE 1 Reply Last reply Reply Quote 0
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