UnititiLite2 loose connection to NAS Synology

I don't know if this is related but since the upgrade to 4.3 i very frequently have "no network" problems on my UnitiLite. When if have this problem, i have to reconnect by pushing the "list" button. My NAS  is a Synology DS115j. I think this happens when the NAS goes into hibernation.

Your system is not correctly set up,  when set up correctly the Synology will wake up on UPnP control command.  

Erwin I don't see any changes in this function since 4.3,  I've been beta testing & have changed firmare many times in the last year  

-  one of the problems with Synology at the moment is hibernation wakes up when not needed because it can't differentiate a true UPnP wake up command & noise from the Windows-10 neighbourhood.

Having the system fully wired is helpful,   but you need to explain a bit more

What control are you using - iPad/Phone or Android

What UPnP media server are you using, the Synology native system or Minimserver

- if its Synology Media Server I can go thtu each of the three screens,  but if its Minimserver then another needs to help out. 

Is your wireless router set for DHCP with UQ, NAS & control also correctly set for DHCP

Hi Mike,

The system is fully ethernet wired : Synology NAS on the ADSL box, Unity on the ethernet cable also.

The same symptom appears from both direct Unity remote control or from the iPhone app.

And i can reproduce the behavior that each time the Unity can't reach the NAS , the lights are off on the NAS and if I restart the NAS , then the Unity can immediately see the uPnP server and its content.

So therefore this thinking that the disk hibernation mode stops also the uPnP services on the NAS and that the Uniti device can't wake up it.

I have also set static IP adresses for the NAS and the Uniti on the ADSL DHCP server in case, but that didn't solve the issue.  (The DHCP Server is turned off on the NAS)

Also i am using the default Synology Media Server , with a SSDP publication interval of 600 sec.

With no checks in the options of the DMA compatibility screen.

I will try to run the NAS without hibernation mode for few days to confirm it is the hibernation that is the culprit.

The FIRST thing to do is go back to full DHCP on everything

- ADSL (that is the DHCP manager) so be sure that is correct

- the settings of all - UL, NAS & iPhone

- reboot everything (the Synology must do this or the DHCP change will not stick)

Switch ON in the following order & let each complete its start process until moving to the next

Router - NAS - UL - iPhone

DHCP is designed for simple plug & play for home systems - & it does an outstanding job.  Static IP addresses is OK, but if something is not correct then its a bad place to be.  

K.I.S. (Keep It Simple) go back to basics & DHCP

SSDP @ 600 is OK - same as mine

Don't change the hibernation settings,  how will you know its fixed ??

Once you've done this please report back,  but please note I am away from home for most of today

I agree with Mike keep it simple.. Yes a full restart is always a good idea to clear gremlins, but this doesn't look like DHCP , ( which is borrowed from the pro world for home networks as well as very large complex networks) nor does it sound specifically Internet router related .. This sounds more basic. It does look like the sleep process on your NAS. Can you disable the sleep mode and rely on disk idle power down instead... By the way many media applications work, the idea of device fully sleeping, waking and responding in a timely manner feels fraught with issues, and a lottery whether it would work or not in a user's setup.

most if not all the UPnP devices will be issue their own SSDP ( this is the multicast discovery) .. If the NAS is asleep, it may well miss the query from the streamer or Naim app, so the UPnP server appears offline.

I am getting the impression that the router inside your ADSL box is the problem just like i am thinking that the router inside my VDSL box is the problem. Are you using a BBOX from Belgacom?

Simon,  the Synology hibernation on this DS model is not true hibernation,  its like Windows "sleep"   compared to full hibernation.  

I have the same/similar Synology model & it does wake up on controller (iPad) command & has never failed to do so.  So in this case its something basic & simple,  so we must get back to basics & work from there.

Ok Mike,

I agree with the KISS principal (in France we had an extra S for Stupid)

So i have removed all fixed IPs from my router (ADSL box) and restarted everything in order advised..

It is all working and i can access the uPnP server from UL menu or iPhone fine.

I have also set the disk hibernation mode to 10 min , to test it again.

I have noticed on my Router that there is an option switched on :  activate UPnP IGD.

With some rules in there, one beeing an UDP one:

Application  IP Host    External Port   Internal Port   Protocole

Is this uPnP IGS Something to let switched on ?

I'll let you know in th following days how it works. Enjoy your Sunday !!!

Thanks a lot for your quick and comprehensive response

Je ne serais pas si impoli  
Je espère que cela fonctionne OK, je vais regarder pour votre poste demain.

I am not familiar with your router & port numbering, maybe Simon can help

Philippe, this firewall setting is not related to your Naim media streaming.. This is allowing something outside on the Internet  to access your system. If you don't know what is is for, make a note of it, and disable it, to see if something you need stops working.. If it does put it back... Or if this sounds complex leave it alone.

just to be clear can you please confirm

a) this issue only occurs when you NAS wakes up from sleep, otherwise it's fine.

b) if something else wakes your NAS before you need to stream music, does it all work ok?

c) are you using the switch ports on the Internet router, or a seperate standalone switch.

d) are you using the wifi on your Internet router or a seperate wifi access.

Bonjour Phillippe, des nouvelles ??

Today i solved all my network, discovery and other problems with my Naim Unitilite by adding my old Linksys router in bridge mode after my ISP provided modem/router and connecting my Synology NAS to the Linksys router and using the Linksys wireless network. So it seems the router in my BBOX3 box is not that good. Simple solution.

Mike,

So far so good,  so i have a KISS setup : Synology DS214 ethernet wired to the ADSL router (is DHCP server also). UnitiLite ethernet wired. Using the Synology Media Center setup with 300 sec publication SSDP interval, no options checked in the DMA compatibility.

The disks hibernatation config is: after 20 minutes.

And the NAS wakes up normally from my Naim iPhone App now.

So everything works fine. This thread is closed for me . i'll reopen if new related events)

Thanks for support!

Good news Phillippe, I have no doubt its a good solution.

SSDP in my system does not seem to affect NAS wake up no mater what time I have it set to.  I have mine set for 600 secs & hibernation set for 10 mins  (coincidently its the same time - 10 mins - but that is irrelevant.  

I have nothing checked for DMA compatibility - but this is related to transcoding, not system discovery - & I don't transcode

I have checked Restrict Access to newly detected DLNA/UPnP & I have listed only the hifi system component IP address to be approved.  This prevents visitors with smart phones pinging the NAS.