RE: How to program a decentralized zigbee mesh with routers only?

Garo Demergian — Mon, 20 Sep 2021 17:31:08 GMT

Hello again,

Well, when i said that i am not getting anywhere i meant that i have not been able to connect routers to each others without a coordinator. But i have now managed to make it work. Those 4 lines of code made it possible.

Thanks for your help!

RE: How to program a decentralized zigbee mesh with routers only?

Simonr — Thu, 16 Sep 2021 12:27:57 GMT

Hi Garo

First off, I would like to mention that we don't recommend using this type of distributed network feature as there are some security problems with the transport key when using this kind of networks. In a distributed network all routers must be pre-configured with a link key used to encrypt the network key. Unfortunately this will be hard coded on all devices in that network, and therefore exploitable.

Can you explain what exactly you mean about "I'm not getting anywhere"? The light_bulb and light_switch example projects don't support doing commissioning by default, as the coordinator is doing so. It should be as simple as calling these lines during initialization, but I haven't tested this myself.

static const zb_uint8_t secret_key[] = {...};
zb_zdo_set_tc_standard_distributed_key(secret_key);
zb_enable_distributed();
zb_zdo_setup_network_as_distributed();

Best regards,

Simon