Type/length <= 1500
Length
Type/length >= 1536
Type
Value of type/length that indicates length
1500 or less
Value of type/length that indicates type
1536 or greater
Ethernet header Type value: IPv4
0x0800
Ethernet header Type value: IPv6
0x86DD
Ethernet header Type value: ARP
0x0806
Minimum frame size
64 = min payload + header + trailer
= 46 + 14 + 4
Don’t count preamble, SFD as part or header
Ethernet minimum payload size
46 bytes