HEADERS AND FRAME FORMAT:
LAN technology standards describe frame format for every technology. All contemporary standards use the following basic format.
a) Frame header b) payload
Frame header has other identifying information and address. Information typically in fields has fixed location and size. The data area may differ in size.
The Ethernet frame format is given in the figure.
Figure: the Ethernet frame format
The different kinds of ether frame format and their purposes is illustrate below:
Preamble Receiver synchronization
Destination Address shows intended receiver device
Source Address Hardware address of sender device
Frame Type kind of data carried in frame
Data Frame payload
CRC 32-bit CRC code