Chapter 6 AP Controller Mode

Table 17 Radio Edit Screen

LABEL

DESCRIPTION

Disable channel

This field displays only when you select 802.11a or 802.11n/a

switching for DFS

in the 802.11 Radio Mode field. Select this if you do not want to

 

use DFS (Dynamic Frequency Selection).

 

DFS (dynamic frequency selection) allows an AP to detect other

 

devices in the same channel. If there is another device using the

 

same channel, the AP changes to a different channel, so that it

 

can avoid interference with radar systems or other wireless

 

networks.

 

 

Super Mode

(For NWA-3160 and NWA-3163)

 

Select this to improve data throughput on the WLAN by enabling

 

fast frame and packet bursting.

 

 

Choose Channel ID

Set the operating frequency/channel depending on your

 

particular region.

 

To manually set the NWA to use a channel, select a channel from

 

the drop-down list box. Click MAINTENANCE and then the

 

Channel Usage tab to open the Channel Usage screen to make

 

sure the channel is not already used by another AP or

 

independent peer-to-peer wireless network.

 

To have the NWA automatically select a channel, click Auto

 

Selection instead.

 

 

Disable DCS to unlock

This appears if the DCS feature is enabled.

 

Click this to disable DCS and select a channel ID manually.

 

DCS is Disabled by default

 

If the NWA is configured in Controller AP mode, it is

 

recommended that you enable Dynamic Channel Selection

 

(DCS). This allows the NWA to select channels with less

 

intereference for Managed APs.

 

 

Short GI

This field is available only when 802.11n/g or 802.11n/a is

 

selected as the 802.11 Radio Mode. Select Enable to use

 

Short GI (Guard Interval). The guard interval is the gap

 

introduced between data transmission from users in order to

 

reduce interference. Reducing the GI increases data transfer

 

rates but also increases interference. Increasing the GI reduces

 

data transfer rates but also reduces interference.

 

 

A-MPDU Aggregation

This field is available only when 802.11n/g or 802.11n/a is

 

selected as the 802.11 Radio Mode. Select Enable to allow the

 

grouping of several A-MSDUs (Aggregate MAC Service Data

 

Units) into one large A-MPDU (Aggregate MAC Protocol Data

 

Unit). This function allows faster data transfer rates.

 

 

106

 

NWA-3160 Series User’s Guide