Dynamic Channel Selection; Overview - ZyXEL Communications 802.11 a/g User Manual

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Dynamic Channel Selection

22.1 Overview

This chapter discusses how to configure dynamic channel selection on the NWA.
Dynamic channel selection is a feature that allows your NWA to automatically
select the radio channel upon which it broadcasts by scanning the area around and
determining what channels are currently being used by other devices.
When numerous APs broadcast within a given area, they introduce the possibility
of heightened radio interference, especially if some or all of them are broadcasting
on the same radio channel. This can make accessing the network potentially
rather difficult for the stations connected to them. If the interference becomes too
great, then the network administrator must open his AP configuration options and
manually change the channel to one that no other AP is using in order to give the
connected stations a minimum degree of cross-channel interference.
Figure 170 An example of cross-channel interference
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