What will the switch do with the packet if the destination and sending ports are the same?

Question

System administration

Prompt, please, about switching in a switch.
A package comes to the switch. The switch looks in its mac address table and sees that the destination mac address is on the same port the packet came from. How will the switch deal with this package?
Thanks in advance for your replies

Answer 1

chupasaurus is right. The switch does not send a frame to the same port it came from.
So he drops the frame.
Moreover, for cisco, ethernet keepalive works like this, that is, loopdetect, there is just mac src = mac dst of the interface.
Obviously, if the frame returned - something in the network is not in order.
Wireshark, in my opinion, shows how LOOP such frames.

Answer 2

He will look at his table and shoot where it is written.
The switch is deep purple as you "magically" build your network :)
If the switch is managed, then there are options.

Answer 3

will send to the port from which the packet came.

Answer 4

Switches never return a packet to the source port (the name hints).