Because I have to simulate something like that in laboratories. Maybe as a bridge to do it, that it would be similar?
I'm not sure you know what you require if you think that a hub and a switch are similar.
Can you explain what you need to achieve? That could help us understand.
Sent from my cell phone. Sorry for the errors.
Let's start from the beginning. I've never worked on mikrotik before, only Cisco. I have to configure 4 ports on Mikrotik RB 1100, here the visual schematic - https://ibb.co/jJWS2rd
3 of them will be connected to computers, one port will be free. One of the computers will be monitor with Wireshark.
When everything is set up, I need to ping the pc1 to pc2 and pc2 to pc1 at the same time. Then, for example, I switch pc2 cable to free port - in the schematic it is port 3 and ping should still work. I have to do some measurements on the Wireshark. I explained everything? This configuration should be a HUB.