Use Gateway Bridge to Send Data to Gateway Directly over MQTT

ChirpStack Gateway Bridge
1

Is it possible to send data directly to the gateway over MQTT or any other means via gateway bridge?

2

According to the architecture diagram, network-server uses MQTT to communicate with the gateway bridge which then sends the data to the gateway (Laird). However, when I watch the gateway/id/commands/+ topic, I don’t see any data. How does network server communicate with the gateways?

I assume it is just as simple as publishing to gateway/id/command/down to schedule a downlink?

3

There is a lot to see if you watch all gateway topics (gateway/#): https://www.chirpstack.io/gateway-bridge/payloads/

Note that by default it is in protobuf format (compact, faster), so you may want to switch gateway and NS to JSON if you want something human-readable for perusing.

4

I assumed that I would see all downlink sent by the network server if I watched the gateway/{{ gateway.id }}/command/down topic, but that topic appears empty. I get plenty of data on all of the other gateway topics, including config, but nothing on down.

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