of the data field are passed to higher level software and do no affect the network transfer control. Data is transferred least significant bit first.
Frame Check Sequence Error detection for message corruption in transmission is provided by computing a cyclic redundancy check (CRC) for the Destination Address, Source Address, Type, and Data fields. The four byte CRC value is provided as the last field of the message packet. It is computed by both the transmitting and receiving nodes and compared by the receiving node to determine that the integrity of the packet has been retained in transmission.