Chapter 9 Wireless

Table 43 Configuration > Wireless > DCS (continued)

LABEL

DESCRIPTION

Enable 5-GHz

Select this if your APs are operating in an area known to have RADAR

DFS Aware

devices. This allows the device to downgrade its frequency to below 5

 

GHz in the event a RADAR signal is detected, thus preventing it from

 

interfering with that signal.

 

Enabling this forces the AP to select a non-DFS channel.

 

 

5-GHz Channel

Select how you want to specify the channels the NWA3000-N series

Selection Method

AP switches between for 5 GHz operation.

 

Select auto to have the NWA3000-N series AP automatically select

 

the best channel.

 

Select manual to select the individual channels the NWA3000-N

 

series AP switches between. Select channels from the Available

 

channels list and use the right arrow button to move them to the

 

Channels selected list.

 

 

Apply

Click Apply to save your changes back to the NWA3000-N series AP.

 

 

Reset

Click Reset to return the screen to its last-saved settings.

 

 

9.7 Technical Reference

The following section contains additional technical information about the features described in this chapter.

Dynamic Channel Selection

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. 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 (or at least a channel that has a lower level of interference) in order to give the connected stations a minimum degree of interference. Dynamic channel selection frees the network administrator from this task by letting the AP do it automatically. The AP can scan the area around it looking for the channel with the least amount of interference.

In the 2.4 GHz spectrum, each channel from 1 to 13 is broken up into discrete 22 MHz segments that are spaced 5 MHz apart. Channel 1 is centered on 2.412 GHz while channel 13 is centered on 2.472 GHz.

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NWA3000-N Series User’s Guide