Standard IEEE 802.3 basic frame format is discussed above in detail. Now let’s see the extended Ethernet frame header, using which we can get Payload even larger than 1500 Bytes.
DA [Destination MAC Address] : 6 bytes
SA [Source MAC Address] : 6 bytes
Type [0x8870 (Ethertype)] : 2 bytes
DSAP [802.2 Destination Service Access Point] : 1 byte
SSAP [802.2 Source Service Access Point] : 1 byte
Ctrl [802.2 Control Field] : 1 byte
Data [Protocol Data] : > 46 bytes
FCS [Frame Checksum] : 4 bytes
Although length field is missing in Ethernet II frame, the frame length is known by virtue of the frame being accepted by the network interface.
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