Zigbee coordinator capacity

[jinujosefrancis (Jinu)]

Hi,
How many Zigbee routers can be stored in Zigbee coordinator in a large network?
Like the number of End device can be stored in its parent is about 14.

[johnconstantelo]

Hi @jinujosefrancis, it depends on the hub manufacturer, but in ST’s case I believe the hub (coordinator) can handle 32 directly connected devices. Others with deeper knowledge of this can chime in, like @BroderickCarlin. Devices can be simple endpoints or endpoints that are routers. We don’t have a mesh mapping tool yet given to us by ST, but we hear it’s coming, but you can still find out relationships between devices. There is a field for each Zigbee device within the IDE called “Next Hop”.

For example, here’s a normal endpoint (not a router) directly connected to the hub:

another example of a routing endpoint connected to the hub:

As for endpoints that each zigbee router can handle, that depends as well, and sometimes that’s hard to find out. I have some zigbee plugs that will handle 16 (I believe), while others much less.

[JDRoberts]

@johnconstantelo

I have some zigbee plugs that will handle 16 (I believe), while others much less.

True, it is up to each manufacturer to decide how many children each model can have.

For inexpensive home automation devices, 5 is a typical number, but some can only handle 3. And of course some, like the Sengled bulbs, will not take any children even though it is a mains powered device. It’s just up to the manufacturer.

As far as the number of routers that the coordinator can store, again, that’s up to each manufacturer and there is no hard and fast rule. But it should be at least hundreds and in some cases thousands.

[Automated_House (Jimmy)]

@johnconstantelo

in ST’s case I believe the hub (coordinator) can handle 32 directly connected devices.

32 direct for V2 and earlier. 64 for V3. Not sure about ST Wifi.

[veeceeoh (Keith G)]

Note that ZigBee routers (repeaters) do not count towards the direct-connected end device limit of SmartThings hubs:

FAQ: 32 Zigbee direct connection device limit?

The HubV2 currently only supports 32 directly connected end devices. If you were to first connect 32 end devices (for example the sengled bulbs) you wouldn’t be able to connect a 33rd device until you join a router to the network. However the routers don’t count against the 32 end device limit and you can add as many routers as you want/need. Each router will support a limited number of end devices and that number will vary by model. We tried to bump the end device limit to 64 in the 0.18 hub firmware release but there was an unrelated regression in the Zigbee firmware and so we had to revert back to the Zigbee firmware that has the 32 device limit. We would like to increase that limit in the future but unfortunately I can’t say right now when that might happen.

[johnconstantelo]

Good find @veeceeoh, and that’s 2 years old too.