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18

Note:

After making any changes, click

Apply

to save.

Warning:

The settings shown above are default settings. Changes made to these items

can cause wireless communication problems.

Field

Description

Band

This is the range of frequencies the gateway will use to communicate with

user’s wireless devices.

Channel

Drop-down menu that allows selection of specific channel.

54g

TM

Rate

This drop-down list lets user specify the wireless communication rate, which

can be

Auto

(uses the highest rate when possible, or else a lower rate) or a

fixed rate between 1 and 54 Mbps.

Multicast rate

This drop-down list lets user specify the wireless communication rate for

multicast packets, which are sent to more than one destination at a time.

The value can be

Auto

(uses the highest rate when possible, or else a

lower rate) or a fixed rate between 1 and 54 Mbps.

Basic rate

User has the option of supporting all rates listed in

Rate

above or using the

1-, 2-Mbps rates, which support only older 802.11b implementations.

Fragmentatio

n threshold

A threshold, specified in bytes, that determines whether packets will be

fragmented and at what size. On an 802.11 connection, packets that are larger

the fragmentation threshold are split into smaller units suitable for the circuit

size. Packets smaller than the specified fragmentation threshold value are not

fragmented.

Enter a value between

256

and

2346

. If user experience a high packet error

rate, try to increase this value slightly. Setting the fragmentation threshold too

low may result in poor performance.

RTS

threshold

This is number of bytes in the packet size beyond which the gateway

invokes its RTS/CTS (request to send, clear to send) mechanism. Packets

larger than this threshold trigger the RTS/CTS mechanism, while the

gateway transmits smaller packets without using RTS/CTS. The default

setting of

2347

, which is the maximum, disables the RTS threshold

mechanism.

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DTIM interval

A delivery traffic indication message (DTIM), also known as a beacon, is a

countdown informing wireless clients of the next window for listening to

broadcast and multicast messages. When the gateway has broadcast or

multicast messages for its clients, it sends its next DTIM message with this

DTIM interval value. The clients hear the beacons and awaken as needed

to receive the broadcast and multicast messages.

Beacon

interval

The amount of time (in milliseconds) between beacon transmissions, each

of which identifies the presence of an access point. By default, wireless

clients passively scan all radio channels, listening for beacons coming from

access points. Before a client enters power-save mode, it needs the beacon

interval to determine when to wake up for the next beacon (and learn

whether the access point has any messages for it). User can enter any

value between

1

and

65535

, but the recommended range is

1 - 1000

.

XPress™

Technology

XPress™ Technology

is a feature in which two of our devices can

communicate with each other at twice the normal rate.

54g+ is a technology that achieves higher throughput with frame-bursting. With

54g+ enabled, aggregate throughput (the sum of the individual throughput of

each network client) improves by up to 25% in 802.11g-only networks, and up

to 75% in mixed networks containing both 802.11g and 802.11b equipment.

5.3.3

Security

This page allows you to configure security features of the wireless LAN interface.

You may set up configuration manually or through WiFi Protected Setup(WPS)

1.

Click

Security

of

Wireless

item and you

’

ll see the following page.

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2.Configure WPA Pre-shared key as below and click

Apply/Save

.

3.Enable WPS as below.

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4.Set WPS AP mode as

Unconfigured

and click

Config AP

.

5. Set WPS AP mode as

configured

and click

Save/Apply.

6.Now you can use a wireless adaptor with WPS function and the WPS button to

connect to access the Internet.

7. To configure security features for the Wireless interface, please open Security

item from Wireless menu. This web page offers nine authentication protocols for user to

secure user’s data while connecting to networks. There are four selections including

Open, Shared, 802.1X,WPA, WPA-PSK, WPA2, WPA2-PSK, Mixed WPA-WPA2, Mixed

WPA-WPA2-PSK. Different item leads different web page settings. Please read the

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following information carefully.

The wireless security page allows user to configure the security features of user’s

wireless network.

There are several security methods to choose f

rom, depending on user’s needs and the

capabilities of user’s wireless machines.



WEP open

and

WEP shared

—

WEP is an encryption scheme that is used to

protect user’s wireless data communications. WEP uses a combination of

64-bit keys or 128-bit keys to pr

ovide access control to user’s network and

encryption security for every data transmission. To decode a data

transmission, each wireless client on the network must use an identical 64-bit

or 128-bit key. WEP is an older wireless encryption method that is not as hard

to break as the more-recent WPA.



802.1x

—

In 802.1x (also known as RADIUS), a separate machine called an

authentication server receives a user ID and password. It grants or denies

access based on whether the ID and password match any entries in its

account list. User can optionally enable WEP encryption with this option.

Because it requires a separate machine acting as the authentication server,

802.1x is most often used in business environments.



WPA

—

WPA is a more recent encryption method that addresses many of the

weaknesses in WEP. Any client capable of WPA encryption should use it