This standard describes the functions, and features and protocol of the logical link control (LLC) sublayer in the local area network protocol. It describes the LLC sublayer interface service specifications to the network layer, to the medium access control (MAC) sublayer, and to the LLC sublayer management function. IEEE Std 802.2-1985 provides a description of the peer-to-peer protocol procedures that are defined for the transfer of information and control between any pair of data link layer service access points on a local area network. To satisfy a broad range of potential applications, two types of data link control operation are included. They are: a data-link-connectionless service across a data link with minimum protocol complexity, and a data-link-connection-oriented service across a data link comparable to existing data link control procedures provided in national and international standards. Two distinct 'classes' of LLC operation are identified. Class I provides data-link-c...

This standard is one of a set of standards produced to facilitate the interconnection of computers and terminals on a local area network (LAN). It is related to the otherre standards by the Reference Model for Open Systems Interconnection. NOTE: The exact relationship of the layers described in this standard to the layers defined by the OS1 Reference Model is under study. This standard describes the functions, and features and protocol of the Logical Link Control (LLC) Sublayer in the IEEE Std 802 Local Area Network Protocol. The LLC sublayer constitutes the top sublayer in the Data Link Layer (see Fig 1-1) and is common to the various medium access methods that are defined and supported by the IEEE/Std 802 activity. Separate standards describe each medium access method individually and indicate the additional features and functions that are provided by the Medium Access Control (MAC) Sublayer in each case to complete the functionality of the Data Link Layer as defined in the 802 archi...