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    Wake on LAN over different VLANS

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    FOG Problems
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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
      
      
      S 1 Reply Last reply Reply Quote 2
      • S
        szecca1 @cml
        last edited by

        @cml Capture.PNG
        I attempted to do that and by the image you see I tried exactly the same thing and the computer doesnt turn on.
        I have wireshark but have never used the program to know how to filter to wol

        cmlC 1 Reply Last reply Reply Quote 0
        • cmlC
          cml Moderator @szecca1
          last edited by

          @szecca1

          In wireshark first select your connection and then click start
          upload-e49875ba-fccb-4db4-bd77-9fbaf92d62fe

          Once started type wol into the filter box and click on apply.

          This is what it looks like when I send a wol:
          upload-9b5bc60e-7570-4aff-83dc-0481f839b087

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

            @cml Capture.PNG

            Ok i did exactly what you said. the top one is from a computer in the 10.1.x.x address and the bottom one which is the one that worked is from the 10.2.x.x address.

            1 Reply Last reply Reply Quote 0
            • cmlC
              cml Moderator
              last edited by

              The top one is on the same subnet as your fog server correct?

              Try running wireshark on the bottom machine (i assume it is on the same subnet as your target), but send the wol from your fog server.

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              • S
                szecca1 @cml
                last edited by

                @cml You are correct, the top one is on the same vlan as the fog server.

                I just ran wireshark on the bottom machine and ran wol from the fog server and wireshark didnt pick anything up

                1 Reply Last reply Reply Quote 0
                • cmlC
                  cml Moderator
                  last edited by

                  Your switch is not forwarding the packets across subnets. Do you know what manufacture/model your L3 device is?

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

                    I thought this article was pretty good.
                    http://theithollow.com/2012/04/how-to-broadcast-across-subnets/

                    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 @cml
                      last edited by

                      @cml My layer 3 device is Nortel 8010

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                      • cmlC
                        cml Moderator
                        last edited by

                        Not familiar with Nortel’s configuration, but there is this post:

                        http://blog.michaelfmcnamara.com/2009/02/wake-on-lan-and-directed-broadcast/

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                        • S
                          szecca1 @cml
                          last edited by

                          @cml I double checked and we already enabled that portion of the switch and still nothing. But I did find a configuration on the switch from broadcast addresses and nothing is listed. Do you think if I entered the broadcast address there,the passport would then allow the packets to pass through the VLANs?

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

                            @szecca1 Try it and see.

                            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 I put an email to my company because I didn’t want to try it and cause my entire network to go down. As soon as I hear from them I will give it a try

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

                                @szecca1 Better yet, see if you can get in touch with a Nortel person and see what they say about it. Or search their website for information.

                                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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                                S 2 Replies Last reply Reply Quote 0
                                • S
                                  szecca1 @Wayne Workman
                                  last edited by

                                  @Wayne-Workman With this situation and me not being the network admin, my company would probably prefer me going directly to them first and then if possible calling Nortel. I will definitely keep you guys updated.

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                                  • S
                                    szecca1 @Wayne Workman
                                    last edited by

                                    @Wayne-Workman said:

                                    @szecca1 Better yet, see if you can get in touch with a Nortel person and see what they say about it. Or search their website for information.

                                    I think you are saying that FOG requires that broadcasts be allowed to travel across the router to other VLANs.
                                    This makes no sense - and even if it could be done - would not be advisable.
                                    That’s what I’m being told, does this sound correct?

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

                                      @szecca1 said:

                                      @Wayne-Workman said:

                                      @szecca1 Better yet, see if you can get in touch with a Nortel person and see what they say about it. Or search their website for information.

                                      I think you are saying that FOG requires that broadcasts be allowed to travel across the router to other VLANs.
                                      This makes no sense - and even if it could be done - would not be advisable.
                                      That’s what I’m being told, does this sound correct?

                                      You came to us with questions about how this is done, and we’ve helped you to the best of our abilities to troubleshoot, identify the problem, and guide you to accomplish what you’re wanting. It’s not our place to say what’s advisable and what’s not for you. Those kinds of decisions should be made by you and your network team.

                                      We’re just here to help you do what you want, to help solve problems, etc.

                                      But, I’ll tell you, it sounds like your network team don’t fully understand how the WOL plugin works, and I’ll tell you that YES, it can be done. And while the packet is a broadcast packet, it’s a packet destined for another network. It’s not broadcast throughout it’s source network, only it’s destination network. The router needs only to forward it, like we’ve pointed out. When it’s broadcast at the destination network, when those broadcast packets hit the router, because the destination network matches the source network, the router ignores it.

                                      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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                                      • Wayne WorkmanW
                                        Wayne Workman
                                        last edited by Wayne Workman

                                        There is one alternative that I thought of…

                                        You could use dedicated relays.

                                        Relays are generally used to encapsulate a UDP packet (or any packet) into a TCP packet, send it to a relay on another network, then the receiving relay would then decapsulate the packet back to UDP, and then send it out.

                                        I’ve seen this used for emergency broadcast systems before, it works well. I’m sure there are several software solutions that do it, both free and paid.

                                        Then, you could just point the WOL plugin to the local relay. Ofcourse, this is just an alternative if your network team just doesn’t want to make a change. You could setup relays without help from the network guys. It’s not ideal and would require you to run a relay on some computer on each network (like a server)… but it’d work.

                                        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 First I want to apologize, I know you guys have worked hard to help me out and I could never repay you for all the help you have given so thank you very much. My company finally decided to work with me and we got it working in one building. They enabled direct broadcasts on both passports and now it is working fine. No one ever informed me that we had two passports which is fantastic. We are going to cleanup the switches and continue testing but seems like we may have figured it out, thanks to you guys!

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

                                            @Wayne-Workman After we installed Fedora 21 server wake on lan no longer works even on the same vlan. I feel like i might have to install something but I can not find anything on the wiki. Would you be able to assist?

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