I have a device that hosts node-red and my mqtt broker. I'm working on transitioning the node-red to a different host with more memory and I'm running into difficulties connecting to the mqqt broker on my original device. Both devices are on my local network, so I'm using the IP address of the device hosting the mqtt broker instead. However, it's simply not connecting and I'm wondering if somebody can assist me with troubleshooting steps. I have included some screen shots that might better illustrate what I'm working with.
When I do a trace route from my new node-red host to the mqtt broker, there's a single hop between the two devices.
I opened ports 1883 and 8883 on the firewall of both devices, so I'm assuming the firewall is not the issue.
I can connect to the mqtt://test.mosquitto.org:1883 on my new node-red host device.
Thanks for any help!!