ZyXEL Communications Corporation NWA5301NJ Manual De Usuario

 Chapter 7 Wireless

NWA5301-NJ User’s Guide

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

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.

Because there is a hard upper limit on an AP’s wireless bandwidth, load balancing can be crucial in 
areas crowded with wireless users. Rather than let every user connect and subsequently dilute the 
available bandwidth to the point where each connecting device receives a meager trickle, the load 
balanced AP instead limits the incoming connections as a means to maintain bandwidth integrity.

There are two kinds of wireless load balancing available on the NWA: 

Load balancing by station number limits the number of devices allowed to connect to your AP. If 
you know exactly how many stations you want to let connect, choose this option.

2.4 GHz Channel 
Selection Method

Select how you want to specify the channels the NWA switches between for 2.4 GHz 
operation.

Select auto to have the NWA display a 2.4 GHz Channel Deployment field you can 
use to limit channel switching to 3 or 4 channels.

Select manual to select the individual channels the NWA switches between. Select 
channels from the Available channels list and use the right arrow button to move 
them to the Channels selected list. 

2.4 GHz Channel 
Deployment

This is available when the 2.4 GHz Channel Selection Method is set 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 
NWA uses channels 1, 4, 7, 11 in this configuration; otherwise, the NWA 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.

Apply

Click Apply to save your changes back to the NWA.

Reset

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

Configuration > Wireless > DCS (continued)