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Ethernet and Wireless connection to server

Posted: Sat Mar 06, 2021 7:47 pm
by kreon28
Hi,

I have a media renders : Panasonic TV (with w-fi module), Panasonic BDT500 (with wf-fi module) and Denon amplituner (with wi-fi module). All of them are connected via their own Wi-Fi to router.
My UMS (10.0.1) is installed on my desktop with ethernet and/or wi-fi connection to router.

I thought that transmission route of the media file is : Media folder -> UMS -> Ethernet -> router wi-fi-> media rendered wi-fi receiver -> picture
But in such way (Ethernet connection : desktop->router), my UMS does not detect and media renders.

When I switch my desktop network connection to Wi-Fi, everything works correctly.
I would prefer ethernet link, because it is 3x faster than my wifi.
Is this supposed to be working that way, or I messed something up?

Re: Ethernet and Wireless connection to server

Posted: Sun Mar 07, 2021 12:09 am
by Nadahar
UPnP AV/DLNA relies on multicast, which doesn't transcend routers. Wired/Wireless doesn't matter, but all devices and the server must be on the same IP subnet - as opposed to two separate, routed subnets. If you can make your router work in bridge/transparent/AP mode, wired and wireless will become the same IP subnet and it should work.

Re: Ethernet and Wireless connection to server

Posted: Sun Mar 07, 2021 7:39 am
by mik_s
Also if you are using a VPN, or have more than one network interface on your computer UMS can pick the wrong one.

Try forcing UMS to use your wired connection. In the general settings tab under "network options (advanced)" pick the correct interface in the "Force networking on interface" dropbox.

If that doesn't work we will need trace logs to be of more help, see the red section above.

Re: Ethernet and Wireless connection to server

Posted: Tue Mar 09, 2021 3:06 am
by kreon28
Thanx for your answers.
I guess marking my router as bridge would be harmful for my home network, so I think I will stick with my present config.

Mik_s - I am not using VPN. Also I forced UMS to pick up the right network interface, but as Nadahar wrote if it is a problem with subnets, then I can do anything more.

Re: Ethernet and Wireless connection to server

Posted: Tue Mar 09, 2021 3:23 am
by Nadahar
I don't know how marking your router as a bridge "could be harmful" to you network, but I don't know your network setup. I'm not talking about bridging between your home network and the Internet, that wouldn't even be possible as you'd need to have valid public IP's for all your devices. In this case, it would be "harmful" in the sense that they were directly accessible from the Internet.

What I'm talking about is "bridging" your wireless network to your wired network. Unless you have a reason to prevent devices on your wireless network access to your wired network (or vice versa), I can't see how you'd consider this "harmful". If you don't trust the devices on either your wired or wireless network, you have bigger problems I'd say. I assume that everybody use proper encryption for their wireless networks these days, WPA1/2/3.

In either case most users don't really have a choice if they want to use UPnP AV/DLNA. This isn't a limitation of UMS, this goes for all communication with UPnP. When they defined the UPnP standard, they decided to rely on multicast (to make it "user friendly"/"just work"), and multicast packets aren't routed by default. It should be possible to configure multicast routing, but I've never managed to get it to work. Most routers don't even have support for this, and I suspect you need a pretty high-end router for that to be at all something to consider. If you have the necessary knowledge and equipment, then go ahead and set up multicast routing between the two subnets. You must make sure that they are routed both ways. If you're not up for this, you have no choice but to make sure that all devices that are to participate in UPnP communication are on the same subnet.

https://en.wikipedia.org/wiki/Multicast_routing