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You are here: Home / SWITCH / Module 9 / Extending the LAN with Wireless Solutions – IEEE 802.11 and the OSI Reference Model

Extending the LAN with Wireless Solutions – IEEE 802.11 and the OSI Reference Model

The IEEE 802 standards define two separate layers for the Data Link layer (Layer 2) of the OSI Reference Model. These two layers are the Logical Link Control (LLC) and the Media Access Control (MAC) sublayers. The IEEE 802.11 standards cover the operation of the MAC sublayer and the Physical layer of the OSI Model. This is illustrated below in Figure 9-4:

Fig. 9-4.  IEEE 802.11 and the OSI Reference Model

The 802.11 frame consists of a 32-byte MAC header, a variable length body (0 to 2312 bytes . . .

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