MQTT Sensor Setup

[JamesHawkins]

Hello,

I have a few sensors which I am trying to set up MQTT for.

I have followed the MT MQTT Setup Guide linked below but the sensor data does not seem to be getting to the broker.

(https://documentation.meraki.com/MT/MT_General_Articles/MT_MQTT_Setup_Guide)

I am using broker.hivemq.com with TCP port 1883 without TLS or user login.

Below is one of the topics which should be published to the broker but I do not see any messages.

meraki/v1/mt/L_727331339820341184/ble/08:f1:b3:2c:18:f2/temperature

I can publish messages to the broker from MQTT Explorer running on my Mac so the broker seems ok.

Is there anything else I need to do to allow MQTT messages from the sensors to be sent out?

[aleabrahao]

MT sensors do not send MQTT messages directly to the broker. Instead, they send data to a gateway device, either an MV camera or MR access point, which then publishes the data to the broker.

Understanding MQTT in Cisco Meraki Dashboard - Vays Infotech

[JamesHawkins · Accepted solution]

Thanks for the response. I enabled MQTT on the APs but was still not seeing any messages.

I did some packet captures and could see packets being sent to the broker containing topics.

What I did notice in the captures was that the letters in the MAC addresses in published topics were in upper case.

When I changed the topic subscriptions in the client to match the messages were received.