Ethernet is used for data transfer from NIC to NIC. It is typically used for connecting devices in a LAN.
| Property | Description |
|---|---|
| Preamble | Indicates the start of a new dataframe. Is 7 bytes long |
| Start frame delimiter | 1 byte delimiter to denote the end of the preamble |
| Destination MAC address | 6 bytes |
| Source MAC address | 6 bytes |
| Length / Type | 2 bytes. Can either represent the number of bytes in the data or the type of the data itself (like IPv4 / IPv6) |
| Data | Can be 46 to 1500 bytes. Can and is, in most cases encapsulated data |
| Frame check sequence | Used by the receiving device to error check the data |