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Main LAN Standards

IEEE 802.1 - Details how the other 802 standards relate to one another and to the ISO/OSI model - the OSI model, prepared by the ISO.

IEEE 802.2 - Divides the ISO/OSI data link layer into two sublayers and (ISO 8802.2) defines the functions of the Logical Link Control (LLC) and the Medium Access Control (MAC) sub-layers.

IEEE 802.3 - Definers the CSMA/CD protocol, which is often referred to as Ethernet.

IEEE 802.4 (ISO 8802.4) - Defines the token passing bus access method.

IEEE 802.5 - Defines the token ring access method.

ISO 9314 (ANSI X3T9.5) -  Defines the fiber distributed data interface (FDDI), which uses a token ring access method with fiber optic cables and operates at a bit rate of 100 Mbps.