Zigbee not meshing

[inv4]

Hi I have two zigbee routers running the light bulb example, the thing is that it seems as they are not forming a mesh, Im doing the following:

1. Pair lightbulb 1 with coordinator (it works)

2. Pair lightbulb 2 which is out of reach of coordinator but within reach of lightbulb 1

It doesn't pairs, I've changed the power source to ZB_ZCL_BASIC_POWER_SOURCE_MAINS_SINGLE_PHASE, and doesn't changes a thing.

Should the example be able to mesh?

[Edvin]

Hello,

I am not sure whether what you ask is possible. I have to check. But first, does it work if bulb2 is in range with the coordinator?

[inv4]

Looking at this file 'zb_mem_config_common.h' I see that in line 130 it says:

/* Let's have enough space to have the entire network in neighbors - Star topology */

A star topology on zigbee is where all the ZR and ZED are connected to one ZC directly, is this SDK able to work on a Mesh topology? Can you ask the Zigbee team if the SDK is able to do this?

Take a look ath this picture: zigbee network topology

[Edvin]

Hello,

Are you sure that light bulb 1 has been promoted to a Zigbee router? Perhaps it is still a zigbee end device when you try to commission the second light bulb?

Have you tried this with all Nordic devices? I am sorry, but it isn't easy to tell whats going on unless we either have a sniffer trace or that we know what FW is running on all the devices, i.e. their capabilities.

[Edvin]

Hello,

I saw your new ticket. I asked my colleague who is working closer with our Zigbee stack, and he is the one that replied in your latest ticket.

Perhaps you can tell me:

What sort of devices are running on nRF52840 DKs, and what devices are nordic devices?

Coordinator: ?

Bulb1: ?

Bulb2: ?

Does bulb 1 and bulb 2 support children?

Can you please provide a sniffer trace? Do you have any spare nordic device? An nRF52840 dongle? An nRf52840 DK? If so, you can use this as a sniffer. If you are not sure how to do this, please let me know. 

I know the difference between mesh topology and star topology, so that is not the misunderstanding here. But the Mesh stack is a full mesh stack, supporting this feature that you claim doesn't work. I do believe you, but in order to figure out why it doesn't work we need to have some more information. Please state what 3rd party devices you use, which ones that are nordic devices, and provide a sniffer trace.

Best regards,

Edvin