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Some standards have a letter to further distinguish the standard (e.g., 802.11b). The letters usually refer to different versions or interpretations of the standard.


TABLE 2.1 IEEE 802 Networking Standards


Standard


Topic


802.1


LAN/MAN Management (and Media Access Control Bridges)


802.2


Logical Link Control


802.3


CSMA/CD


802.4


Token Bus


802.5


Token Ring


802.6


Distributed Queue Dual Bus (DQDB) Metropolitan Area Network (MAN)


802.7


Broadband Local Area Networks


802.8


Fiber-Optic LANs and MANs


802.9


Integrated Services (IS) LAN Interface

TABLE 2.1 IEEE 802 Networking Standards (continued)


Standard


Topic


802.10


LAN/MAN Security


802.11b


Wireless LAN


802.12


Demand Priority Access Method

The IEEE standards’ relationship to the OSI model


FIGURE 2.13





The 802.1 LAN/MAN Management (and Media Access Control Bridges)


IEEE 802.1 discusses standards for LAN and MAN management, as well as for MAC bridges. One of the derivatives of 802.1 is the spanning tree algorithm for network bridges (bridges are discussed later in this chapter). The spanning tree algorithm helps to prevent bridge loops in a multibridge network.

The 802.2 Logical Link Control


This standard specifies the operation of the Logical Link Control (LLC) sublayer of the Data Link layer of the OSI model. The LLC sublayer provides an interface between the MAC sublayer and the Network layer. The 802.2 standard is used by the IEEE 802.3 Ethernet specification (discussed next), but

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