Modbus TCP and database connection over 1 ethernet port

[lukepenko]

Hey guys

I'm looking for some help.

I'm creating a new project with an ESP32:
I want to read all my systems at home (heating system, electricity meter, water meter, ...) via modbus tcp and than write it into my database via API. For the hardware I chose an ESP32. I don't want to use the wifi interface.
So can I do it with only 1 ethernet port? If I'm putting a switch infront would that work?

I appreciate your help
Thanks

[Flavio Miranda]

@lukepenko 

 This seems to be a bit out of networking scope but  if the device speaks ethernet then the switch should be ok for it. Now, in order to tell you how many interfaces, it would be necessary a topology of the whole system. You mentioned you want to your system, how the data will flow from the system to the ESP32? How will your data base be connected to the ESP32?  How are you going to access this?

  One interface may  be enough or not, it will depend on the topology