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Individual specifications in the 802 series are identified by a second number. For example, 802.3 is the specification for a Carrier Sense Multiple Access network with Collision Detection (CSMA/CD), which is related to (and often mistakenly called) Ethernet, and 802.5 is the Token Ring specification. Other specifications describe other parts of the 802 protocol stack. 802.2 specifies a common link layer, the Logical Link Control (LLC), which can be used by any lower-layer LAN technology. Management features for 802 networks are specified in 802.1. Among 802.1’s many provisions are bridging (802.1D) and virtual LANs, or VLANs (802.1Q).


Cover of 802.11 Wireless Networks: The Definitive Guide, 2nd Edition


misconception about 802.3 being ethernet