i have been using ChirpStack from when it was called LoraServer and setup a little network for my home automation with custom made Arduino Module using LMIC libary.
I have negelegted updating for a while but i updated to the latest version of ChirpStack 4 days ago.
While the nodes worked perferly fine with all previous versions (i think i updated last early this year) now i’m not able to see any downlink messages in the live frames (gateway and node) and my nodes increase DR to be seen as no downlink messages are received by them. generally they got every few hours
The problem however i discovered noticing a jump from 100 downlinks to 1200 downlinks in the gateway statistics which seem odd. Thats roughly half of messages receive. Looking with a SDR i can see my gateway responding to messages, i also see them in the Network Server. But in the web UI i dont see downlinks. Scheduling downlink will also not clear the queue.
i tried quite a bit to chase down the problem but i’m stuck.
Join still works but NewChannel Update, Status request or manual downlinks are not working. Most importantly while i see MQTT messages with command down i dont see them in the UI anymore.
Maybe someone encountered something similar in a similar setup recently
ChirpStack will only consider a downlink as transmitted when it receives an acknowledgement from the gateway. Really old packet-forwarder versions did not send back these acknowledgements. You could validate this in the ChirpStack Gateway Bridge if any tx ack was received from the gateway.
is this something that changed recently (like last 2 updates) i used to see my downlinks
i set up my gateways via ttn-zh/ic880a-gateway github repo
looking at the gateway it seem to ack something but i dont see it in the bridge