[SOLVED] Communication problems between two computers
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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 -
@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,
MarkSorry 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):
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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 multicastingConfiguring 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 informationIf 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 -
@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 -
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.
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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
Best wishes,
Woland
