Layer 2 - Ethernet frame

• Destination and source are 48-bit MAC addresses

• Type 0x0800 means that the data portion of the ethernet frame contains an IP datagram. Type 0x0806 for ARP.

Preamble

Dest

6 bytes

Source

6 bytes

Length

2 bytes

Data

46 to 1500 bytes

CRC

4 bytes

Type

2 bytes

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