How are frames transmitted on ethernet?

Question

Computer networks

How is data transferred to the physical layer? Up to the link layer in tcp / ip , everything is clear that the transmitted data is overgrown with headers, but then? The equipment analyzes the size of the ip packet and, depending on its size, cuts it (the ip packet) into pieces (frames) and then transfers them to the physical layer, or does it encapsulate the entire ip packet into a frame and then cuts this large frame into pieces? Or in some other way?

Answer 1

The frame is not cut. An Ethernet header and a CRC code are hung on a piece of a fragmented IP packet of the packet. Well, as if in an Ethernet Frame, there may not be ip at all (for example, there are mpls or ipv6)

Answer 2

here in the topic
https://habr.com/en/post/226807/

Answer 3

ehh, as far as I remember. At the second level, the packet sequence is not performed. The service information that is attributed to the package is simply added. If the packet size is larger than the port MTU, the packet will be dropped.