TD-W8901G

54Mbps Wireless ADSL2+ Modem Router User Guide

Figure 4-14

¾

Access point Settings:

These are the settings of the access point. You can configure the

rules to allow wireless-equipped computers and other devices to communicate with a wireless

network.

•

Access point:

Select Activated to allow wireless station to associate with the access

point.

•

Channel:

Select your region and the channel you want to use from the drop-down List of

Channel. This field determines which operating frequency will be used. It is not

necessary to change the default channel unless you notice interference problems with

another nearby access point.

30

TD-W8901G

54Mbps Wireless ADSL2+ Modem Router User Guide

•

Beacon Interval:

Enter a value between 20-1000 milliseconds. The Beacon Interval

value indicates the frequency interval of the beacon. A beacon is a packet broadcast by

the Router to synchronize the wireless network. The default value is 100.

•

RTS/CTS Threshold:

Should you encounter inconsistent data flow, only minor reduction

of the default value 2347 is recommended. If a network packet is smaller than the preset

RTS threshold size, the RTS/CTS mechanism will not be enabled. The Router sends

Request to Send (RTS) frames to a particular receiving station and negotiates the

sending of a data frame. After receiving an RTS, the wireless station responds with a

Clear to Send (CTS) frame to acknowledge the right to begin transmission. In most cases,

keep its default value of 2347.

•

Fragmentation Threshold:

This value specifies the maximum size for a packet before

data is fragmented into multiple packets. If you experience a high packet error rate, you

may slightly increase the Fragmentation Threshold. Setting the Fragmentation Threshold

too low may result in poor network performance. Only minor reduction of the default value

is recommended. In most cases, it should remain at its default value of 2346.

•

DTIM:

This value, between 1 and 255, indicates the interval of the Delivery Traffic

Indication Message (DTIM). A DTIM field is a countdown field informing clients of the next

window for listening to broadcast and multicast messages. When the Router has buffered

broadcast or multicast messages for associated clients, it sends the next DTIM with a

DTIM Interval value. Its clients hear the beacons and awaken to receive the broadcast

and multicast messages. The default value is 1.

•

Wireless Mode:

In the drop-down list you can select “802.11b”, “802.11g”, “802.11b+g”.

¾

Multiple SSIDs Settings:

These are the settings of the SSID.

•

SSID Index:

The index of the SSID, and in this model, you can only leave it as a default

value of 1.

•

Broadcast SSID:

When wireless clients survey the local area for wireless networks to

associate with, they will detect the SSID broadcast by the Router. To broadcast the

Router’s SSID, keep the default setting. If you don’t want to broadcast the Router’s SSID,

select “No”.

•

WMM:

WMM function can guarantee the packets with high-priority messages being

transmitted preferentially. It is strongly recommended to enable this function.

31

TD-W8901G

54Mbps Wireless ADSL2+ Modem Router User Guide

Figure 4-15

•

SSID:

Wireless network name shared among all points in a wireless network. The SSID

must be identical for all devices in the wireless network. It is case-sensitive and must not

exceed 32 characters (use any of the characters on the keyboard). Make sure this setting

is the same for all stations in your wireless network. Type the desired SSID in the space

provided.

•

Authentication Type:

Select an authentication type from the drop-down list, which

allows you to configure security features of the wireless LAN interface. Options available

are: Disabled, WEP-64Bits, WEP-128Bits, WPA-PSK, WPA2-PSK, and WPA-PSK/

WPA2-PSK.

1)

WEP-64Bits

To configure WPA-64Bits settings, select the WPA-64Bits option from the drop-down list. The

menu will change to offer the appropriate settings. WPA-64Bits is a data privacy mechanism

based on a 64-bit shared key algorithm, as described in the IEEE 802.11g standard.

Figure 4-16

2)

WEP-128Bits

To configure WPA-64Bits settings, select the WPA-64Bits option from the drop-down list. The

menu will change to offer the appropriate settings. 128-bit is stronger than 64-bit.

32

TD-W8901G

54Mbps Wireless ADSL2+ Modem Router User Guide

Figure 4-17

3)

WPA-PSK

To configure WPA-PSK settings, select the WPA-PSK option from the drop-down list. The

menu will change to offer the appropriate settings. WPA-PSK requires a shared key and does

not use a separate server for authentication. PSK keys can be ASCII or Hex type.

Figure 4-18

¾

Encryption:

Select the encryption you want to use: TKIP/AES, TKIP or AES (AES is an

encryption method stronger than TKIP).

•

TKIP

(

T

emporal

K

ey

I

ntegrity

P

rotocol) - a wireless encryption protocol that provides

dynamic encryption keys for each packet transmitted.

•

AES

(

A

dvanced

E

ncryption

S

tandard) - A security method that uses symmetric

128-bit block data encryption.

¾

Pre-Shared Key:

Enter the key shared by the Router and your other network devices. It

must have 8-63 ASCII characters or 64 Hexadecimal digits.

4)

WPA2-PSK

To configure WPA2-PSK settings, select the WPA2-PSK option from the drop-down list. The

menu will change to offer the appropriate settings. WPA2-PSK requires a shared key and

does not use a separate server for authentication. PSK keys can be ASCII or Hex type.

33

TD-W8901G

54Mbps Wireless ADSL2+ Modem Router User Guide

Figure 4-19

5)

WPA-PSK/WPA2-PSK

To configure WPA-PSK/WPA2-PSK settings, select the WPA-PSK/WPA2-PSK option from

the

drop-down

list.

The

menu

will

change

to

offer

the

appropriate

settings.

WPA-PSK/WPA2-PSK requires a shared key and does not use a separate server for

authentication. PSK keys can be ASCII or Hex type. WPA-PSK/WPA2-PSK is more flexible

than WPA-PSK or WPA2-PSK.

Figure 4-20

¾

WDS Settings:

Select On/Off to enable/disable WDS. With this function enabled, the Router

can bridge two or more WLANs.

•

MAC Address:

Enter the MAC Address you wish to bridge in the field.

¾

Wireless MAC Address Filter:

Wireless access can be filtered by using the MAC addresses

of the wireless devices transmitting within your network’s RADIUS.

•

Active:

If you wish to filter users by MAC Address, select “Activated”, and “Deactived” for

don’t.

•

Action:

To filter wireless users by MAC Address, select “Allow Association” or “Deny

Association” the follow Wireless LAN station(s) association.

•

MAC Address:

Enter the MAC Address you wish to filter in the field.

)

Note:

For most users, it is recommended to use the default Wireless LAN Performance settings. Any

changes made to these settings may adversely affect your wireless network. Under certain

circumstances, changes may benefit performance. Carefully consider and evaluate any changes

to these wireless settings.

34