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    [SOLVED] Communication problems between two computers

    How To... ?
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    • mark
      mark @Lauri last edited by

      Troubleshooting Network Issues with Isadora@lauri said:

      Anyway, now the Net Broadcaster - listener pair works in all versions I have (2.5.2, 2.6 and 2.6.1b4).

      OK glad to hear that we finally got you up and running.

      Team: @Michel @Skulpture @DusX @mc_monte @crystalhorizon - please keep this in mind for the future

      I've just written this support article called "Troubleshooting Network Issues with Isadora" -- you can refer users to that if this comes up again.

      Best Wishes,
      Mark

      Media Artist & Creator of Isadora
      Macintosh SE-30, 32 Mb RAM, MacOS 7.6, Dual Floppy Drives

      D 1 Reply Last reply Reply Quote 3
      • D
        DillTheKraut @mark last edited by DillTheKraut

        @mark said:

        Troubleshooting Network Issues with Isadora@lauri said:
        Anyway, now the Net Broadcaster - listener pair works in all versions I have (2.5.2, 2.6 and 2.6.1b4).
        OK glad to hear that we finally got you up and running.
        Team: @Michel @Skulpture @DusX @mc_monte @crystalhorizon - please keep this in mind for the future
        I've just written this support article called "Troubleshooting Network Issues with Isadora" -- you can refer users to that if this comes up again.
        Best Wishes,
        Mark

         Sorry Marc, if I'm intervening here, with all respect but i think the support article is a bit misleading about the multicast point!
        I'm not 100% sure about how Isadora and the net Broadcaster is handling this, but how usually multicast software should do it. And as I already used the net broadcaster with several dumb hubs, I'm pretty sure that this works fine. And if I'm wrong about that, I would like to know how this is handled, because I want to know, why I need to buy expensive routers and/or switches with a specific function, unless I have a lot of traffic! Not talking to use several routers in one network, just to split it even without routing to another subnet.

        This is how I understand multicast and effecting network devices (taken from here, https://support.symantec.com/e... as it was the most simple description I found):

        ----

        Hubs, routers, and switches

        Configuring a network to work with multicasting requires configuring the
        physical devices that connect the computers to each other. These are
        hubs, routers, and switches. A network uses hubs, routers, and switches
        to send information from one part of the network to another part. Hubs
        pass all the information they receive, without filtering it. Routers may
        filter some information, and switches usually filter information.

        In most cases, hubs do not require any configuration. Configuration is
        required only in hubs that include capabilities that are normally found
        only in routers or switches.

        Configuring for multicasting

        Configuring a router or switch to use multicasting requires that the
        router or switch be IGMP capable. The specific steps that are used for
        configuring any particular router or switch require information that is
        specific to that router or switch. Information is usually available in
        the documentation that accompanies the router or switch, or from the
        manufacturer's Web site.

        More information

        If you suspect that your router or switch might not be correctly
        configured for multicasting, you can test this possibility by using a
        hub instead of a router or switch. If multicasting works when the
        computers are connected through a hub, and not when they are connected
        through a router or switch, the problem is probably due to the
        configuration of the router or switch or to the number of hops between
        the two computers.

        -----

        For my understanding, a full working, by all network devices supported multicast network is needed only, if you have a lot of traffic between them, like streaming video, or transmitting a lot of parameters parallel, etc.

        And my personal extra bit is, that a simple non managed switch should usually work like a hub in this case and just broadcast the multicast signal. Only more expensive managed switches should have these issues.

        Again, I might be wrong about this, but thus meaning everything I learned about RTP or audio protocol issues, like dante or  Motu might not be right, so I would be happy to get an update about this!

        kindly
        dill

        mark 1 Reply Last reply Reply Quote 0
        • mark
          mark @DillTheKraut last edited by

          @dillthekraut said:

           Sorry Marc, if I'm intervening here, with all respect but i think the support article is a bit misleading about the multicast point!

           OK, well that's good to know. I had several situations where using a switch did not allow multicasting, but a router with the same computers did. 

          Does anyone else know about this? I don't want to doubt dill, but I must admit I was basing this solely on experience.

          Best Wishes,
          Mark

          Media Artist & Creator of Isadora
          Macintosh SE-30, 32 Mb RAM, MacOS 7.6, Dual Floppy Drives

          D 1 Reply Last reply Reply Quote 0
          • D
            DillTheKraut @mark last edited by

            @mark

            As I understand it, routers only handle multicast between the LAN and WAN ports. If you have a router with multiple LAN, it most times is just a simple HUB function between them. Especially at cheeper ones.

            About the switches, there are some 'simple' 5 or 8 port switches that looks just exactly like little small hubs or switches without any extras. These are not much more expensive than those, but are so called managed switches instead. These got an own IP address reachable by Web Interface or special manufacturer software. These switches have the possibility of priority settings or even port trunking or VLAN support. These switches are known to have issues with multicast handling, if they don't support igmp.

            1 Reply Last reply Reply Quote 0
            • Woland
              Woland Tech Staff last edited by

              Just because it's relevant for this topic, in case other people in future need this info, here's a step-by-step tutorial for making multiple Isadora Computers communicate over Net Broadcasters or OSC

              LINK

              Best wishes,

              Woland

              TroikaTronix Technical Support
              New Support Ticket: https://support.troikatronix.com/support/tickets/new
              Support Policy: https://support.troikatronix.com/support/solutions/articles/13000064762
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              Professional Services: https://support.troikatronix.com/support/solutions/articles/13000109444

              | Isadora Version: all of them | Mac Pro (Late 2013), macOS 10.14.6, 3.5GHz 6-core, 1TB SSD, 64GB RAM, Dual AMD FirePro D700s |

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