Is it possible to discover which protocols are present in the different port of a switch?

Help
1

Hello everybody,
I started using libreNMS for my master degree thesis about Industrial Ethernet.I needed a tool that can give me :

  1. Partecipants in a LAN
  2. A L2 topology of the network
  3. Bandwith usage on every link
  4. Which protocols are present in every link
    I know that is it possible to achieve point 1 and 3. I understand that something can be done with point 2, but I do not understand if it possible achieve point 4.
    Thanks in advance,
    Alessandro
2

What do you mean by Protocols for each link?

3

Suppose that I have a managed switch and more devices attacched to it. I would like to know which protocols are present for every link,such as 180 TCP packet and 80 UDP packet for that device.

4

Yeah thats not possible to pass that data back you would need something with netflow like nfsen or ntpong.