The minimum length of an Ethernet frame is 64 bytes in total. This number was chosen because RAM was expensive back in 1978, and a receiver would have needed more RAM if the frame had been bigger. This means that if the third layer wants to send more than 1500 bytes of data over Ethernet, it must be sent across multiple frames.
Table of contents
Here's what we'll cover:Before the Frame – Preamble (8 bytes)Destination Address and Source Address (6 bytes each)Type / Length field – Ethernet II (Type) (2 bytes)Data and Pad (46-1500 bytes)Checksum – CRC32 (4 bytes)The Problem with the Type / Length FieldUnicast and Multicast BitsHow are collisions handled in Ethernet?About the AuthorSort: