Chapter 6 Wireless LAN

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76

Figure 54

Network > Wireless LAN > MAC Filter

The following table describes the labels in this menu.

6.6

Wireless LAN Advanced Screen

Use this screen to allow intra-BSS networking and set the RTS/CTS Threshold.

Click

Network

>

Wireless LAN

>

Advanced

. The screen appears as shown.

Table 30

Network > Wireless LAN > MAC Filter

LABEL

DESCRIPTION

Active

Select

Yes

from the drop down list box to enable MAC address filtering.

Filter Action

Define the filter action for the list of MAC addresses in the

MAC Address

table.

Select

Deny

to block access to the NBG-418N, MAC addresses not listed will be allowed to

access the NBG-418N.

Select

Allow

to permit access to the NBG-418N, MAC addresses not listed will be denied

access to the NBG-418N.

Set

This is the index number of the MAC address.

MAC Address

Enter the MAC addresses of the wireless station that are allowed or denied access to the

NBG-418N in these address fields. Enter the MAC addresses in a valid MAC address format,

that is, six hexadecimal character pairs, for example, 12:34:56:78:9a:bc.

Apply

Click

Apply

to save your changes back to the NBG-418N.

Reset

Click

Reset

to reload the previous configuration for this screen.

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77

Figure 55

Network > Wireless LAN > Advanced (Universal Repeater Mode)

The following table describes the labels in this screen.

Table 31

Network > Wireless LAN > Advanced

LABEL

DESCRIPTION

Wireless Advanced Setup

RTS/CTS

Threshold

Data with its frame size larger than this value will perform the RTS (Request To Send)/

CTS (Clear To Send) handshake.

Enter a value between

0

and

2347

.

Fragmentation

Threshold

The threshold (number of bytes) for the fragmentation boundary for directed messages.

It is the maximum data fragment size that can be sent. Enter an even number between

256

and

2346

.

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 low-power mode before

waking up to handle the beacon. This value can be set from

20

to

1024

ms. A high value

helps save current consumption of the access point.

DTIM Period

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. This

value can be set from

1

to

10

.

Preamble Type

A preamble affects the timing in your wireless network. There are two preamble modes:

long and short. If a device uses a different preamble mode than the NBG-418N does, it

cannot communicate with the NBG-418N.

CTS Protection

When set to

None

, the NBG-418N protects wireless communication against interference.

Select

Auto

to let the NBG-418N determine whether to turn this feature on or off in the

current environment.

Tx Power

This field controls the transmission power of the NBG-418N. When using the NBG-418N

with a notebook computer, select a lower transmission power level when you are close to

the AP in order to conserve battery power.

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6.7

Quality of Service (QoS) Screen

Use the

QoS

screen to enable Wifi MultiMedia Quality of Service (WMMQoS). This allows the NBG-

418N to automatically set priority levels to services, such as e-mail, VoIP, chat, and so on.

Click

Network

>

Wireless LAN

>

QoS

. The following screen appears.

Figure 56

Network > Wireless LAN > QoS

Extension Channel

If you select

40 MHz

or

Auto 20/40MHz

as your

Channel Bandwidth

in the

Wireless

LAN > General

screen, the extension channel enables the NBG-419N to get higher data

throughput. This also lowers radio interference and traffic.

Aggregation

Message Protocol Data Unit (MPDU) aggregation collects Ethernet frames along with their

802.11n headers and wraps them in a 802.11n MAC header. This method is useful for

increasing bandwidth throughput in environments that are prone to high error rates.

Mac Service Data Unit (MSDU) aggregation collects Ethernet frames without any of their

802.11n headers and wraps the header-less payload in a single 802.11n MAC header.

This method is useful for increasing bandwidth throughput. It is also more efficient than

A-MPDU except in environments that are prone to high error rates.

Short GI

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.

Enable Intra-BSS

Traffic

A Basic Service Set (BSS) exists when all communications between wireless clients or

between a wireless client and a wired network client go through one access point (AP).

Intra-BSS traffic is traffic between wireless clients in the BSS. When Intra-BSS is

enabled, wireless client

A

and

B

can access the wired network and communicate with

each other. When Intra-BSS is disabled, wireless client

A

and

B

can still access the wired

network but cannot communicate with each other.

WLAN STA setting

overwrites WLAN

AP setting

This field is available only when the NBG-418N is in universal repeater mode.

Select

Enabled

to have the NBG-418N copy the SSID and wireless security settings of

the associated AP, and use them for wireless connections between the NBG-418N and its

wireless clients.

Otherwise, select

Disabled

to configure different wireless and security settings for

wireless connections between the NBG-418N and its wireless clients.

Apply

Click

Apply

to save your changes to the NBG-418N.

Reset

Click

Reset

to reload the previous configuration for this screen.

Table 31

Network > Wireless LAN > Advanced (continued)

LABEL

DESCRIPTION

Chapter 6 Wireless LAN

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79

The following table describes the labels in this screen.

6.8

WPS Screen

Use this screen to enable/disable WPS, view or generate a new PIN number and check current WPS

status. To open this screen, click

Network

>

Wireless LAN

>

WPS

tab.

Figure 57

Network > Wireless LAN > WPS

The following table describes the labels in this screen.

Table 32

Network > Wireless LAN > QoS

LABEL

DESCRIPTION

Enable WMM QoS

Check this to have the NBG-418N automatically give a service a priority level

according to the ToS value in the IP header of packets it sends. WMM QoS (Wifi

MultiMedia Quality of Service) gives high priority to voice and video, which makes

them run more smoothly.

Apply

Click

Apply

to save your changes to the NBG-418N.

Reset

Click

Reset

to reload the previous configuration for this screen.

Table 33

Network > Wireless LAN > WPS

LABEL

DESCRIPTION

WPS Setup

Enable WPS

Select this to enable the WPS feature.

PIN Number

This displays a PIN number last time system generated. Click

Generate

to generate a

new PIN number.

WPS Status

Status

This displays

Configured

when the NBG-418N has connected to a wireless network using

WPS or when

Enable WPS

is selected and wireless or wireless security settings have

been changed. The current wireless and wireless security settings also appear in the

screen.

This displays

Unconfigured

if WPS is disabled and there are no wireless or wireless

security changes on the NBG-418N or you click

Release_Configuration

to remove the

configured wireless and wireless security settings.

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6.9

WPS Station Screen

Use this screen when you want to add a wireless station using WPS. To open this screen, click

Network

>

Wireless LAN

>

WPS Station

tab.

Note: Note: After you click

Push Button

on this screen, you have to press a similar

button in the wireless station utility within 2 minutes. To add the second wireless

station, you have to press these buttons on both device and the wireless station

again after the first 2 minutes.

Figure 58

Network > Wireless LAN > WPS Station

The following table describes the labels in this screen.

Release

Configuration

This button is only available when the WPS status displays

Configured

.

Click this button to remove all configured wireless and wireless security settings for WPS

connections on the NBG-418N.

Apply

Click

Apply

to save your changes back to the NBG-418N.

Refresh

Click

Refresh

to get this screen information afresh.

Table 33

Network > Wireless LAN > WPS (continued)

LABEL

DESCRIPTION

Table 34

Network > Wireless LAN > WPS Station

LABEL

DESCRIPTION

Push Button

Use this button when you use the PBC (Push Button Configuration) method to configure

wireless stations’s wireless settings. See

Section 5.2.1.1 on page 58

.

Click this to start WPS-aware wireless station scanning and the wireless security

information synchronization.

Or input station’s

PIN number

Use this button when you use the PIN Configuration method to configure wireless station’s

wireless settings. See

Section 5.2.1.2 on page 59

.

Type the same PIN number generated in the wireless station’s utility. Then click

Start

to

associate to each other and perform the wireless security information synchronization.