Hi all,
I have a spare rpi 2 running z2m, connecting to my Home Assistant.
I want to set up a second instance of z2m connector and wonder if there is a stand alone device such that I don’t need a pi and an additional connector lying around?
There are a few good serial over Ethernet coordinators. Do you have a PoE network switch?
Hm, no, that’s not a good option. I could go poe, but that will be a lot of additional work. LAN would be nice with additional power supply (usb?)
They work fine with USB power too.
If you don’t want to setup a POE switch then just get a POE injector for a single device placement.
I use one with one of my camera’s to power it.
Poe injector has additional costs, and is huge, so I’m not a fan.
Which devices would you recommend with lan with and without poe?
I’m a big fan of the UZG-01 from Zigstar; I’ve bought a couple of them thru Elecrow. Works with POE, or with USB power. Can be setup in various modes (LAN / Wifi / USB ; Coordinator / Router). Device seems well supported; cost under 40 USD.
Z2M over LAN with that device has totally solved my Zigbee connectivity issues in a building that has wired-Ethernet but no radios get thru the steel siding & roof (i.e, Faraday cage).
I had also tried a Zigbee Gateway from Athom (same price), which appears that it should serve the purpose of Z2M, but I had difficulties in configuring, so I just moved on to the UZG-01.
It seems that this device keeps popping up all over the Internet. I just ordered one, I think it sounds solid 
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I got it all working. The documentation of the manufacturer is great, even has info on multi-gateway support. What I did not expect: you need a Z2M instance per gateway, so I had to setup another one. I will have to think about how to get this properly into my network … Maybe I need some VM host, or I finally need to figure out how Docker works :-/
If by network you mean getting your second coordinator to share the ZigBee mesh with your first one, you can’t.
Both networks will always be separate and create individual meshes
No, I meant my infrastructure. I’m not sure how I want to host two z2m instances 
I now have one on a pi with a zigbee stick attached, and one standalone gateway using the z2m addon of ha. I don’t like both now.
Ideally, I would have a pi hosting x z2m instances with docker, x uzg standalone gateways, and all reporting to the home assistant server. That will require some serious rebuild of my infrastructure, so I will have to leave it as it is for the moment 
Isn’t this what you said you wanted in the first post, and also here:
There might be some terminology that you are mixing up here. In most cases you are best off running a single Z2M installation. If you have a large property with a separate building some distance away from your Z2M that might warrant a second Zigbee installation / network, just as an example. You can use UZG-01 both as a coordinator and as a router. As the latter you join the UZG-01 to your existing network as a router (flashed with router firmware) and it adds to the mesh. However, keep in mind that the meshing is done over Zigbee, not ethernet, so the router-flashed UZG needs to be in range of the existing network, it does not do Zigbee over ethernet.
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No, it’s not exactly what I had in mind in the beginning. I thought that I would be able to have several coordinators talk to the same z2m instance.
The router setup did not work in my house. I have an extremely exhausting journey (time, money, nerves) behind me where I tried to have one single zigbee network with lots of zigbee plugs around the house for a good mesh, but it never worked from basement to first floor.
It’s OK now, though. As long as it works… It’s better to have it working… A beautiful solution can wait another couple of years… And then there might be Matter anyway
You can only have one coordinator, but you can (should) have multiple routers.
I know that. Why are you telling me this?
So the quoted text was wrong?
That depends on your perspective.
It is of course wrong what I had thought, which is exactly what I said. So it is wrong and correct what you quoted, all at the same time.
Yet, I don’t know why we are discussing philosophy here or what is your point?
I was just trying to help you…
You said you thought you were able to have several coordinators talk to the same z2m instance, I told you that it is not possible, and somehow that leads into that it depends on a perspective?
If that’s how you respond to a helpful intent I’ll gladly not respond to your posts in the future. Have a great weekend!
That is past tense. I thought so, but now I know that I was wrong.
I appreciate your help, really 
I would just install the Z2M edge version alongside your normal Z2M install and use that for your 2nd coordinator.
You will have 2 separate meshes, but you’ll also be able to take advantage of having the 2nd coordinator on ethernet, while also being able to get both in HA