User's Manual

• Fragmentation Threshold. This value indicates how much of the Router’s

resources are devoted to recovering packet errors. The value should remain

at its default setting of 2,346. If you have decreased this value and experi-

ence high packet error rates, you can increase it again, but it will likely

decrease overall network performance. Only minor modifications of this

value are recommended.

• DTIM Interval. This value 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 mes-

sages. When the Router has buffered broadcast or multicast messages for

associated clients, it sends the next DTIM with a DTIM Interval value.

Clients for the Router hear the beacons and awaken to receive the broadcast

and multicast messages.

• Basic Rates. The basic transfer rates should be set depending on the speed

of your wireless network. You must select 1-2 (Mbps) if you have older

802.11 compliant equipment on your network, such as wireless adapters

that support only 1 or 2 Mbps. Selecting 1-2 (Mbps), however, does not

limit the basic transfer rates of faster adapters.

• TX Rates. Select all the supported rates at which an access point will com-

municate with a client.

• Preamble Type. The preamble defines the length of the CRC block for

communication between the Router and the roaming Network Card. (High

network traffic areas should use the shorter preamble type.) Select the

appropriate preamble type and click the Apply button to set it.

• Authentication Type. You may choose between Open System, Shared

Key, and Both. The Authentication Type default is set to Open System, in

which the sender and the recipient do NOT share a secret key. Each party

generates its own key-pair and asks the receiver to accept the randomly-

generated key. Once accepted, this key is used for a short time only. Then

a new key is generated and agreed upon. Shared Key is when both the

sender and the recipient share a secret key.

• Antenna Selection. This selection is for choosing which antenna transmits

data. By default, the Diversity Antenna selection, used to increase recep-

tion, is chosen.

Wireless Access Point Router with 4-Port Switch

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