Chapter 5 Wireless Settings Screen

NWA1100-N User’s Guide

63

QoS

This displays the QoS priority level associated with the SSID.

This field is configurable only when you enable 802.1Q VLAN tagging in the 

System > 

General

 screen and select the 

Tag

 check box in this screen.

Select the Quality of Service priority for this BSS’s traffic. 

Advanced Settings

Beacon Interval

When a wirelessly networked device sends a beacon, it includes with it a beacon 
interval. This specifies the time period before the device sends the beacon again. The 
interval tells receiving devices on the network how long they can wait in lowpower 
mode before waking up to handle the beacon. A high value helps save current 
consumption of the access point.

DTIM Interval

Delivery Traffic Indication Message (DTIM) is the time period after which broadcast 
and multicast packets are transmitted to mobile clients in the Active Power 
Management mode. A high DTIM value can cause clients to lose connectivity with the 
network. 

Output Power 

Set the output power of the NWA in this field. If there is a high density of APs in an 
area, decrease the output power of the NWA to reduce interference with other APs. 
Select one of the following 

Full 

(Full Power), 

50%

, 

25%

, 

12.5%

 or 

Min

 (Minimum). 

See the product specifications for more information on your NWA’s output power.

Preamble Type

Select 

Dynamic

 to have the AP automatically use short preamble when wireless 

adapters support it, otherwise the AP uses long preamble.

Select 

Long

 if you are unsure what preamble mode the wireless adapters support, 

and to provide more reliable communications in busy wireless networks. 

RTS/CTS Threshold

(Request To Send) The threshold (number of bytes) for enabling RTS/CTS handshake. 
Data with its frame size larger than this value will perform the RTS/CTS handshake. 
Setting this attribute to be larger than the maximum MSDU (MAC service data unit) 
size turns off the RTS/CTS handshake. Setting this attribute to its smallest value (1) 
turns on the RTS/CTS handshake. 

Extension channel 
protection mode

You can use 

CTS to self 

or 

RTS-CTS

 protection mechanism to reduce conflicts with 

other wireless networks or hidden wireless clients. The throughput of 

RTS-CTS 

is 

much lower than 

CTS to self

. Using this mode may decrease your wireless 

performance.

A-MPDU aggregation 

This field is available only when 

802.11 b/g/n

 is selected as the 

Wireless 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.

Short GI 

This field is available only when

 802.11 b/g/n 

is selected as the 

Wireless 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.

Rates Configuration

This section controls the data rates permitted for clients. 

For each 

Rate

, select an option from the 

Configuration

 list. The options are:

•

Basic

 (1~11 Mbps only): Clients can always connect to the access point at this 

speed.

•

Optional

: Clients can connect to the access point at this speed, when permitted 

to do so by the AP.

•

Disable

: Clients cannot connect to the access point at this speed.

Table 7   

Wireless > Wireless Settings: Multi SSID (continued)

LABEL

DESCRIPTION