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    Wake on LAN over different VLANS

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    FOG Problems
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    • S
      szecca1 @Wayne Workman
      last edited by

      @Wayne-Workman Ok I am stuck using your example so I pulled a random IP from my high school.
      Subnet mask: 255.255.0.0
      IP: 10.2.1.64

      Binary IP Subnet:

      00001010.00000010.00000001.01000000
      11111111.11111111.00000000.00000000

      (Client IP network portion: 00001010.00000010.0000 Client portion: 0001.01000000)

      Which the fall through for the network address if I am correct would be:
      00001010.00000010.00000000.00000000
      which give a network address of 10.2.0.0

      After that I am not sure where to go as I get confused by what you did.

      Wayne WorkmanW 1 Reply Last reply Reply Quote 0
      • Wayne WorkmanW
        Wayne Workman @szecca1
        last edited by Wayne Workman

        @szecca1 said:

        @Wayne-Workman Ok I am stuck using your example so I pulled a random IP from my high school.
        Subnet mask: 255.255.0.0
        IP: 10.2.1.64

        Binary IP Subnet:

        00001010.00000010.00000001.01000000
        11111111.11111111.00000000.00000000

        (Client IP network portion: 00001010.00000010.0000 Client portion: 0001.01000000)

        Which the fall through for the network address if I am correct would be:
        00001010.00000010.00000000.00000000
        which give a network address of 10.2.0.0

        After that I am not sure where to go as I get confused by what you did.

        IP: 00001010.00000010.00000001.01000000
        Subnet: 11111111.11111111.00000000.00000000
        (only where there is a 1 for subnet, the IP address portion falls through)
        Fall through: 00001010.00000010.00000000.00000000 <-- your network address

        To get the broadcast, turn on all the client portion ‘bits’ where the subnet mask is 0.

        00001010.00000010.11111111.11111111 <-- your broadcast address 10.2.255.255

        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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        • S
          szecca1 @Wayne Workman
          last edited by

          @Wayne-Workman And that broadcast address should allow me to run the wake on lan to the high school which is where that IP came from?

          Wayne WorkmanW 1 Reply Last reply Reply Quote 0
          • Wayne WorkmanW
            Wayne Workman @szecca1
            last edited by

            @szecca1 said:

            @Wayne-Workman And that broadcast address should allow me to run the wake on lan to the high school which is where that IP came from?

            It should. Test it and report back? I am not using the plugin yet so I don’t know, but if Tom says that’s how it is, then 99.9% of the time, that’s how it is.

            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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            • S
              szecca1 @Wayne Workman
              last edited by

              @Wayne-Workman Capture.PNG

              This is what I entered into that plugin creating it for my high school and just tested it and didnt work.

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

                You likely need to allow udp-broadcast-forwarding on your switches. At the very least, it needs to be enabled for the routing switch. The way to do this varies depending on the switch. HP Procurve allows for udp-broadcast-forwarding on (I think)

                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)

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                S 1 Reply Last reply Reply Quote 1
                • S
                  szecca1 @Tom Elliott
                  last edited by

                  @Tom-Elliott We already did that thinking it was a switch problem before doing this plug in

                  Tom ElliottT 1 Reply Last reply Reply Quote 0
                  • Tom ElliottT
                    Tom Elliott @szecca1
                    last edited by

                    @szecca1 are you 100% sure that 10.2.255.255 is that networks broadcast address?

                    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)

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                    S Wayne WorkmanW 2 Replies Last reply Reply Quote 0
                    • S
                      szecca1 @Tom Elliott
                      last edited by

                      @Tom-Elliott I worked with @Wayne-Workman and he helped me figure that out by converting an IP address into that. Previous posts go through it and thats what we came to the conclusion it is.

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                      • Tom ElliottT
                        Tom Elliott
                        last edited by

                        What is the subnet mask of your network? Class A, B, C?

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                        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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                        • S
                          szecca1 @Tom Elliott
                          last edited by

                          @Tom-Elliott Subnet mask is 255.255.0.0, class B

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                          • Wayne WorkmanW
                            Wayne Workman @Tom Elliott
                            last edited by

                            @Tom-Elliott said:

                            @szecca1 are you 100% sure that 10.2.255.255 is that networks broadcast address?

                            If the info he gave me is correct, I can assure that what we came up with is correct, but feel free to doublecheck my work using third party tools: http://www.subnetonline.com/pages/subnet-calculators/ip-subnet-calculator.php

                            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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                            https://fog-external-reporting-results.fogproject.us/

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                            • S
                              szecca1 @Wayne Workman
                              last edited by

                              @Wayne-Workman As long as all you needed was a random IP address and the subnet that info is correct. The only thing weird is the website you sent is saying we are a class A even though we are a class B.

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                              • Tom ElliottT
                                Tom Elliott
                                last edited by

                                That’s often the case class a class B classy are usually directed by the first octet one through 126.whatever is considered class a, 128.whatever through 191.whatever is considered class b,192 up is class c

                                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

                                S 1 Reply Last reply Reply Quote 0
                                • S
                                  szecca1 @Tom Elliott
                                  last edited by

                                  @Tom-Elliott ok that makes sense, and I ran another test and still wake on lan is not working. At this point I am not sure what to do. The imaging works perfectly but the clients have to be on in order for the imaging to go through, obviously.

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

                                    Your public IP might be a Class B address…

                                    But internally, you have Class A addressing via NAT.

                                    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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                                    • S
                                      szecca1 @Wayne Workman
                                      last edited by

                                      @Wayne-Workman “The three default subnet masks are 255.0.0.0 for Class A, 255.255.0.0 for class B, and 255.255.255.0 for Class C.”

                                      From this my impression is we have a class B subnet mask but I could be wrong, but I dont think this matters as whichever class it is, wake on lan isnt working lol

                                      Wayne WorkmanW 1 Reply Last reply Reply Quote 0
                                      • Wayne WorkmanW
                                        Wayne Workman @szecca1
                                        last edited by

                                        @szecca1

                                        OK… troubleshooting time I suppose.

                                        You need to find a utility that will send a wake-on-lan packet to your desired IP address… (the broadcast address).

                                        Then,
                                        Go on site and see if you can broadcast a WOL packet and see if computers start up. If it works, then your switches / router configurations are to blame.

                                        If it doesn’t work… maybe make sure WOL is enabled on those computers… maybe try to WOL an individual client and see if that works.

                                        Report back and we will go from there.

                                        I’d recommend trying this one:
                                        http://sourceforge.net/projects/aquilawol/

                                        properties2.png

                                        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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                                        • S
                                          szecca1 @Wayne Workman
                                          last edited by

                                          @Wayne-Workman I just downloaded this program and tested it exactly how you had asked and the computer wakes up perfectly fine. I then turned it off and attempted to wake on lan again from FOG and again to no avail. So you’re saying it’s a switch/router config thats to blame but I am not sure where that could be.

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                                          • cmlC
                                            cml Moderator
                                            last edited by cml

                                            One thing you can try is sending the packet from the command line with wakeonlan

                                            wakeonlan 28:D2:44:0C:D9:9B
                                            Sending magic packet to 255.255.255.255:9 with 28:D2:44:0C:D9:9B
                                            

                                            Do you have wireshark? If so set the filter to wol and see if you get a packet, if not your switches may be blocking it.

                                            Here were the relevent Cisco commands I had to set on our 4500:

                                            ***fogserver vlan***
                                            interface Vlan2					
                                             ip helper-address 10.2.255.255
                                            !
                                            ***high network vlan***
                                            interface Vlan1					
                                             ip helper-address 10.1.0.119
                                             ip directed-broadcast 101
                                            !
                                            ip forward-protocol udp echo
                                            ip forward-protocol udp discard
                                            
                                            access-list 101 permit udp host 10.1.0.119 any eq echo
                                            access-list 101 permit udp host 10.1.0.119 any eq discard
                                            
                                            
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