IEEE 802.11e user priority converted into VLAN tags

IEEE 802.11e is an extension to the WLAN standards that incorporates quality-of-service (QoS) functions. An access point operating this standard can assign a user priority to each wireless client associated with it. By prioritizing wireless data packets, the access point can provide preferred handling for voice over IP clients, for example. On the LAN side, access points are commonly connected with a switch, and different LAN segments are often separated by VLANs. The wired LAN uses other mechanisms for the prioritization of data packets.

The following example application illustrates this:

The access point is the interface between wired LAN and wireless LAN, and it converts the different prioritization information accordingly:

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