Connection minimserver - UPnP control point unstable - issue NAS/Minimserver?

Connection minimserver - UPnP control point unstable - issue NAS/Minimserver? - Printable Version

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Connection minimserver - UPnP control point unstable - issue NAS/Minimserver? - mjolink - 13-03-2018 13:08

I bought a Linn Akurate DS and a NAS (Synology 214Play) to store my music two weeks ago. From my UPnP control point (Linn Kazoo and BubbleDS Next) I can see my Linn Akurate.
The problem is that the connection UPnP control point to minimserver is unstable, most of the times I can't see minimserver from my UPnP control point, therefore can't reach my music. Sometimes the connection is there, but can't find what is causing it. When there is a connection and I turn off and then on wifi connection on my phone, the connection is gone again. After some time it is there again spontaneously. Although minimwatch on my laptop is green and there is a connection between the two, it can happen that I still don't see minimserver in Linn Kazoo/BubbleDS from my phone or Ipad.
I have already spent over 20 hours analysing and testing scenario's. The issue is that the problem isn't there all the time (not a black or white situation), but seemingly random.

What I have done so far:
- checked rights on minim folder and music folder on my NAS.
- completely removed Java (7 and 8) and minimserver and did a reinstall, installed Java8 package and Minimserver (MinimServer-0.8.5.3-intel.spk).
- unplugged router and NAS and put them back online after some minutes
- removed the '_' from my NAS name and station name thinking this might be the connection issue

I have isolated the issue to the NAS/minimserver OR connection NAS-Router. I installed minimserver on my laptop and tested it. This worked flawlessly! This is indicating to me that the issue might be in/around the NAS (or connection NAS-Router)

I can hand over log files. I have a screenshot of the connection to minimserver from BubbleDS when it is working available.

Who can help me in the right direction?

RE: Connection minimserver - UPnP control point unstable - issue NAS/Minimserver? - Cebolla - 13-03-2018 13:59

Sounds like a multicast discovery issue with your particular router, specifically the multicast communication between devices in the wired and wireless parts of the network (with wired to wired and wireless to wireless multicast communication behaving normally). There's some basic help mentioned for this problem in the MinimServer Trroubleshooting webpage:
http://minimserver.com/troubleshooting.html#My%20control%20point%20can%27t%20see%20MinimServer

Might also be useful to read the Routers and multicast discovery thread:
https://forum.minimserver.com/showthread.php?tid=2722

What is your router, BTW?

RE: Connection minimserver - UPnP control point unstable - issue NAS/Minimserver? - mjolink - 13-03-2018 16:41

Thanx for your tips! Found the bit on IGMP snooping on the site of minimserver, googled and looked for it for my router, but seems not present as a setting on my router (Technicolor TG789bvn router).

When I run minimserver on my laptop (wireless connected to my router) this isn't an issue for finding mininmserver on my control point on android, but when running minimserver on my NAS (wired connected to my router) it is.
Found another site with some tips about Port Forwarding for Technicolor routers - I will test it tonight...to be continued

RE: Connection minimserver - UPnP control point unstable - issue NAS/Minimserver? - mjolink - 13-03-2018 22:19

I did some testing tonight. Also found an extra document describing how to Configure Port Forwarding (see https://support.zen.co.uk/kb/Knowledgebase/Broadband-Technicolor-TG-582-Configure-Port-Forwarding).
I don't exactly know what the problem is - but get the idea that forwarding port 9790 of minimserver on my NAS in my router could be the solution?!

I did the following, unfortunately without succes:
added minimserver and forward port 9790 (based on description on website mentioned above)
[Image: 4omnMMp.png]

and then linked the minimserver to device NASMJ
[Image: hvqetQ7.png]

My control point still can't find automatically minimserver. Only after a rescan of minimserver connection is restored. Are there other devices on 9790 causing my control point not finding minimserver? Should I link minimserver to my Ipad? Should a reschedule to another port then 9790?

RE: Connection minimserver - UPnP control point unstable - issue NAS/Minimserver? - simoncn - 13-03-2018 23:42

The issue is not related to port forwarding. It is related to multicast discovery.

Have you enabled UPnP as described on this page?

Does your router have the setting "Allow multicast from Broadband Network" on the WLAN configuration page as shown in this section? If so, this should be enabled.

RE: Connection minimserver - UPnP control point unstable - issue NAS/Minimserver? - Cebolla - 14-03-2018 00:14

If none of what Simon suggests works, then you're most likely stuck with having to switch the wired/wireless crossing IGMP snooping off.

You may able to use the Thomson/Technicolor router's command line interface (CLI) to switch it off, via telnet. I actually did this myself years ago on a Technicolor TG582n (provided by the old O2 Broadband service), plus the webpage where I originally got the info from is still there - hopefully the same commands work on your TG789bvn :
https://lehollandaisvolant.net/tout/_misc/telnet/

Make sure you do as it suggests at the beginning and backup your router's config, before making any configuration changes via the router's CLI. The relevant section is "DLNA Server (Media Sharing) Not Discovered Across LAN / WLAN" (about 3/4 of the way down), using the eth bridge igmpsnooping config command.

For a telnet client application, you could try the Windows built-in one (needs to be enabled) or just install the excellent PuTTY SSH and telnet client:
https://www.putty.org/

Sorry I couldn't get back in time to tell you not to bother with port forwarding!

RE: Connection minimserver - UPnP control point unstable - issue NAS/Minimserver? - mjolink - 14-03-2018 10:16

(13-03-2018 23:42)simoncn Wrote: The issue is not related to port forwarding. It is related to multicast discovery.

Have you enabled UPnP as described on this page?

UPnP is enabled. Had Extended Security enabled and later disabled for testing purposes, but could not find any difference.

(13-03-2018 23:42)simoncn Wrote: Does your router have the setting "Allow multicast from Broadband Network" on the WLAN configuration page as shown in this section? If so, this should be enabled.

I will check this tonight!

RE: Connection minimserver - UPnP control point unstable - issue NAS/Minimserver? - mjolink - 14-03-2018 10:24

(14-03-2018 00:14)Cebolla Wrote: If none of what Simon suggests works, then you're most likely stuck with having to switch the wired/wireless crossing IGMP snooping off.

You may able to use the Thomson/Technicolor router's command line interface (CLI) to switch it off, via telnet. I actually did this myself years ago on a Technicolor TG582n (provided by the old O2 Broadband service), plus the webpage where I originally got the info from is still there - hopefully the same commands work on your TG789bvn :
https://lehollandaisvolant.net/tout/_misc/telnet/

Make sure you do as it suggests at the beginning and backup your router's config, before making any configuration changes via the router's CLI. The relevant section is "DLNA Server (Media Sharing) Not Discovered Across LAN / WLAN" (about 3/4 of the way down), using the eth bridge igmpsnooping config command.

For a telnet client application, you could try the Windows built-in one (needs to be enabled) or just install the excellent PuTTY SSH and telnet client:
https://www.putty.org/

Sorry I couldn't get back in time to tell you not to bother with port forwarding!

Thanks for you input. I will test it after I have tested the last option Simon gave.
I am glad this forum / support is so active!

RE: Connection minimserver - UPnP control point unstable - issue NAS/Minimserver? - mjolink - 14-03-2018 20:50

"Allow multicast from Broadband Network" was unfortunately already checked on.
I will try the putty/telnet option tomorrow. To be continued

RE: Connection minimserver - UPnP control point unstable - issue NAS/Minimserver? - mjolink - 16-03-2018 09:13

I have done some testing but it seems like I can't reach the router via telnet (turned on Telnet in Windows)
[Image: nxpKy6M.png]

1) I read on internet that some routers can't be reached by telnet?! I searched for an option in my router to turn telnet on, but could not find it.
2) My girlfriend has an extra router between her ISP router and e.g. her TV. Would it help if I place that router between the NAS and my Technicolor TG789bvn router?

Currently even restarting / rescanning or stop / start of the minimserver doesn't help anymore to make connection from my control point (it used to help in making connection). I couldn't reach my music via the control point yesterday.