All my home network is properly wired (apart from the iPad/iPhone which I use as remote controllers for core).
Network issues have been eliminated.
ID41 is accessed from Roon core (NUC), from MacBook (both when the Core is on and off) and I easily changed the name of the zone when accessed via typing IP address in browser.
Given the fact that this issue coincided with Roon 1.3 update, I tend to lean towards thinking it has to be related to ID41 firmware.
waiting till I get the cable or may be my Meridian dealer will help me do it in a proper fashion.
How is it going, @Dmitry? The quite similar story of an MS200 gone missing after 1.3 appears to be solved after updating the firmware, so I guess you are on the right track:
My Meridian PP came back to me saying that Meridian confirmed that the issue must be with my netwrok. So I have been playing a lot with the network set-up today and came to a conclusion that when I was trying to eliminate my switch glitching I have only tried Roon with a new switch and not Meridian Sooloos Config. This time I stripped the network and used my old 5 port NETGEAR switch, then re-typed the 818 and run the Sooloos Config and it worked! It has updated my 818 and it now works perfectly well with Roon and with my original network set-up.
The switch in question is TPLINK SG108, which looks and feels exactly as NETGEAR GS108, but will still be replaced tomorrow as I would surely not want to experience this outage again.
So beware this TPLINK switch if you have Meridian gear!
Thank you everybody for your support and valuable input!
I know there are a number of posts regarding missing endpoints. I fell victim myself when a new update was pushed through, my roon ready endpoints were still there, all the meridian endpoints were not. Just wanted to confirm that ultimately it was a network issue for me.
To wit: an update was pushed through overnight and all of a sudden the end points went missing with no changes to the network. so I followed the steps Ludwig posted in a similar post about MS200s, the most important one was running the sooloos configuration program to get all the endpoint firmware to spec. But still no love.
Ultimately, what had occurred is that I had borrowed an ip address from an unmanaged switch temporarily some days before as I was swapping in a new router. when Roon server rebooted, it lost contact with all the endpoints working through that specific switch, even though before the update it continued to work fine. a simple reboot of the switch, and voila, back to normal.
If I had only not wasted my team re-installing roon server, and looking at firewall configuration (both were unnecessary).
I post this because the odd behavior was that roon continued to work fine despite what I did until it was forced to restart. so it seemed as if nothing had changed, yet the update was correlated with losing the endpoints.
So, in sum, keep the faith and find the network issues.
