Bedienungsanleitung Linksys wireless g adsl gateway wag54g (Seite 34 von 99) (Englisch)

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Chapter 5: Configuring the Gateway

The Wireless Tab

Wireless-G ADSL Gateway

Advanced Wireless Settings Tab

Advanced Wireless

On this screen you can access the Advanced Wireless features, including Authentication Type, Basic Data Rates,

Control Tx Rates, Beacon Interval, DTIM Interval, RTS Threshold, and Fragmentation Threshold.

• Authentication Type. The default is set to Auto (default), which allows either Open System or Shared Key

authentication to be used. For Open System authentication, the sender and the recipient do not use a WEP

key for authentication but can use WEP for data encryption. If you want to allow on Open System

authentication, then select Open System. For Shared Key authentication, the sender and recipient use a WEP

key for both authentication and data encryption. If you want to use only Shared Key authentication, then

select Shared Key. It is recommended that this option be left in the default (Auto) mode, because some

clients cannot be configured for Shared Key.

• Control Tx Rates. The default transmission rate is Auto. The range is from 1 to 54Mbps. The rate of data

transmission should be set depending on the speed of your wireless network. You can select from a range of

transmission speeds, or keep the default setting, Auto, to have the Gateway automatically use the fastest

possible data rate and enable the Auto-Fallback feature. Auto-Fallback will negotiate the best possible

connection speed between the Gateway and a wireless client.

• Beacon Interval. The default value is 100. Enter a value between 1 and 65,535 milliseconds. The Beacon

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

to synchronize the wireless network.

• DTIM Interval. The default value is 3. 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 Gateway 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.

• Fragmentation Threshold. This value should remain at its default setting of 2346. The range is 256-2346

bytes. It 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 modifications of this

value are recommended.

• RTS Threshold. This value should remain at its default setting of 2347. The range is 0-2347 bytes. If you

encounter inconsistent data flow, only minor modifications are recommended. If a network packet is smaller

than the preset RTS threshold size, the RTS/CTS mechanism will not be enabled. The Gateway sends Request

to Send (RTS) frames to a particular receiving station and negotiates the sending of a data frame. After

Figure 5-20: Advanced Wireless Settings

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