Ethernet frame

[nnn_sss22]

Hello,

I am attaching one image for Ethernet frame shape.

on which cases Preamble (7 bytes) and SFD (1 byte) will be added and what is the function of Preamble and SFD?

[Julio E. Moisa]

Hi,

Here a good explanation about these fields:

https://www.quora.com/What-is-the-use-of-the-preamble-in-an-Ethernet-frame

Hope it is useful

:-)