ZyXEL Communications NXC2500 User Manual page 99

Table 49 Configuration > Wireless > DCS (continued)
LABEL
DCS Sensitivity
Level
Enable DCS Client
Aware
2.4 GHz Channel
Selection Method
Available
channels
Channels
selected
2.4 GHz Channel
Deployment
Enable 5 GHz DFS
Aware
5 GHz Channel
Selection Method
Available
channels
NXC2500 User's Guide
DESCRIPTION
Select the AP's sensitivity level toward other channels. Options are High, Medium, and
Low.
Generally, as long as the area in which your AP is located has minimal interference from
other devices you can set the DCS Sensitivity Level to Low. This means that the AP
has a very broad tolerance.
If you are not sure about the number and location of any other devices in the region,
set the level to Medium. The AP's tolerance for interference is relatively narrow.
On the other hand, if you know there are numerous other devices in the region, you
should set the level to High to keep the interference to a minimum. In this case, the
NXC's tolerance for interference is quite strict.
Note: Generally speaking, the higher the sensitivity level, the more frequently the AP
switches channels. As a consequence, anyone connected to the AP will experience
more frequent disconnects and reconnects unless you select Enable DCS Client
Aware.
Select this to have the AP wait until all connected clients have disconnected before
switching channels.
If you disable this then the AP switches channels immediately regardless of any client
connections. In this instance, clients that are connected to the AP when it switches
channels are dropped.
Select auto to have the AP search for available channels automatically in the 2.4 GHz
band. The available channels vary depending on what you select in the 2.4 GHz
Channel Deployment field.
Select manual and specify the channels the AP uses in the 2.4 GHz band.
This text box lists the channels that are available in the 2.4 GHz band. Select the
channels that you want the AP to use, and click the right arrow button to add them.
This text box lists the channels that you allow the AP to use. Select any channels that
you want to prevent the AP from using it, and click the left arrow button to remove
them.
This field is available only when you set 2.4 GHz Channel Selection Method to auto.
Select Three-Channel Deployment to limit channel switching to channels 1,6, and
11, the three channels that are sufficiently attenuated to have almost no impact on one
another. In other words, this allows you to minimize channel interference by limiting
channel-hopping to these three "safe" channels.
Select Four-Channel Deployment to limit channel switching to four channels.
Depending on the country domain, if the only allowable channels are 1-11 then the NXC
uses channels 1, 4, 7, 11 in this configuration; otherwise, the NXC uses channels 1, 5,
9, 13 in this configuration. Four channel deployment expands your pool of possible
channels while keeping the channel interference to a minimum.
Select this if your APs are operating in an area known to have RADAR 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.
Select auto to have the AP search for available channels automatically in the 5 GHz
band.
Select manual and specify the channels the AP uses in the 5 GHz band.
This text box lists the channels that are available in the 5 GHz band. Select the
channels that you want the AP to use, and click the right arrow button to add them.
Chapter 7 Wireless
99