LoRa Gateway Bridge does not send data to MQTT broker

ChirpStack Gateway Bridge
1

@brocaar

Hi,

loraserver is not getting my data from gateway.

But Gateway sends data perfectly.please check the lora-gateway-bridge log

INFO[0252] gateway: received udp packet from gateway     addr="127.0.0.1:44562" protocol_version=2 type=PushData
INFO[0252] gateway: rxpk packet received                 addr="127.0.0.1:44562" data="gDQLbwOAEAAFpzXE2vZHQ74=" mac=b827ebfffec3XXXX
INFO[0252] gateway: sending udp packet to gateway        addr="127.0.0.1:44562" protocol_version=2 type=PushACK
INFO[0252] backend: publishing packet                    qos=0 topic=gateway/b827ebfffec3XXXX/rx

TCPDUMP result from gateway

.................%1..'......{"rxpk":[{"tmst":1121181515,"chan":2,"rfch":1,"freq":868.500000,"stat":1,"modu":"LORA ","datr":"SF7BW125","codr":"4/5","lsnr":7.2,"rssi":-106,"size":17,"data":"gDQLbwOAEAAFpzXE2vZHQ74="}]}
11:15:52.485779 IP localhost.1700 > localhost.44562: UDP, length 4

But when i check loraserver and lora-app-server log, there is no change in the screen

loraserver

INFO[0000] backend/gateway: connected to mqtt server
INFO[0000] backend/gateway: subscribing to rx topic      qos=0 topic=gateway/+/rx
INFO[0000] backend/gateway: subscribing to stats topic   qos=0 topic=gateway/+/stats
INFO[0000] migrations applied                            count=0
INFO[0000] starting api server                           bind="0.0.0.0:8000" ca-cert= tls-cert= tls-key=
INFO[0000] starting downlink device-queue scheduler
INFO[0097] finished unary call with code OK              grpc.code=OK grpc.method=GetDevice grpc.service=ns.NetworkServerService grpc.start_time="2018-08-21T11:25:18+05:30" grpc.time_ms=0.646 peer.address="127.0.0.1:59492" span.kind=server system=grpc
INFO[0099] finished unary call with code OK              grpc.code=OK grpc.method=GetDeviceProfile grpc.service=ns.NetworkServerService grpc.start_time="2018-08-21T11:25:20+05:30" grpc.time_ms=0.751 peer.address="127.0.0.1:59492" span.kind=server system=grpc
INFO[0102] finished unary call with code OK              grpc.code=OK grpc.method=GetGateway grpc.service=ns.NetworkServerService grpc.start_time="2018-08-21T11:25:23+05:30" grpc.time_ms=2.783 peer.address="127.0.0.1:59492" span.kind=server system=grpc
INFO[0108] backend/gateway: publishing tx packet         qos=0 topic=gateway/b827ebfffecXXXX /tx
INFO[0108] finished unary call with code OK              grpc.code=OK grpc.method=SendProprietaryPayload grpc.service=ns.NetworkServerService grpc.start_time="2018-08-21T11:25:29+05:30" grpc.time_ms=1.139 peer.address="127.0.0.1:59492" span.kind=server system=grpc

Lora-app-server

 system=grpc
INFO[0094] finished client streaming call                grpc.code=OK grpc.method=StreamFrameLogsForGateway grpc.service=ns.NetworkServerService grpc.time_ms=0.02 span.kind=client system=grpc
INFO[0094] finished unary call with code OK              grpc.code=OK grpc.method=Get grpc.service=api.OrganizationService grpc.start_time="2018-08-21T11:25:24+05:30" grpc.time_ms=3.13 peer.address="127.0.0.1:59752" span.kind=server system=grpc
INFO[0099] gateway ping created                          dr=0 frequency=86800000 gateway_mac=b827ebfffecXXXX id=429
INFO[0099] finished client unary call                    grpc.code=OK grpc.method=SendProprietaryPayload grpc.service=ns.NetworkServerService grpc.time_ms=1.78 span.kind=client system=grpc
INFO[0099] gateway ping sent to network-server           gateway_mac=b827ebfffecXXXX id=429
INFO[0099] gateway updated                               mac=b827ebfffecXXXX name=XX-LoRa-Gateway

It clearly shows that, data is out from gateway,
Even i tried subscribing to mqtt topics from server side,but still no response for mqtt topics also.
Please help me to resolve this!

2

To summarize, your gateway communicates correctly with LoRa Gateway Bridge and LoRa Gateway Bridge is forwarding the data to the MQTT broker without any errors.

Then when subscribing to the gateway/# mqtt topic, you don’t see any data?

That looks like a MQTT ACL issue to me. E.g. the connected MQTT client does not have permissions to subscribe to these topics?

3

@brocaar

Thanks for your reply. :slight_smile:
It was working fine for few weeks,i haven’t done any changes on the mqtt acl part. :wink:
Can you please suggest me for the next move ?

4

Find out what did change between when all as working and now :slight_smile:

5

Thanks @brocaar. I will check and get back to you.

6

@brocaar

Issue is resolved.

What i have done is ,installed lora-gateway bridge on my server itself, instead of gateway .Now everything works fine.

I am not sure whether this is an correct approach or not? :slight_smile:

Your thoughts on this ?

7

Given that it works on one box and not the other, it seems like a network related issue to me.

8

@brocaar

Thanks Brocaar! For Your Support :slight_smile: