IEEE 802.3 Ethernet

• IEEE 802.3 1-persistent CSMA/CD LAN
• Xerox, DEC.
• Transceivers
• Repeaters
• Frame

Field                      Width        Contents  
Preamble                    7          each 10101010  
Start of Frame Delimiter    1          10101011  
Destination               2 or 6       Destination Address  
Source                    2 or 6       Source Address   
Length                      2          Length of Data Field   
Data                      0 - 1500     The data   
Pad                       0 - 46       Short frames could be garbage   
Checksum                    4          Checksum

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Last Changed:15 September 1995