ZyXEL Communications B-320 Guia do Utilizador descarregar pdf (Página 25)

ZyAIR Wireless LAN Utility

Using the ZyAIR Utility 3-5

3.4.1 SSID

The SSID (Service Set Identity) is a unique name shared among all wireless devices in a wireless network.

Wireless devices must have the same SSID to communicate with each other.

3.4.2 Channel

A range of radio frequencies used by IEEE 802.11b wireless devices is called a channel.

3.4.3 Transmission Rate (Tx Rate)

ZyAIR provides various transmission (data) rate options for you to select. Options include Fully Auto, 1 M

bit/sec, 2 M bit/sec, 5.5M bit/sec, 11M bit/sec, 16.5M bit/sec and 27.5M bit/sec

. In most networking

scenarios, the factory default Fully Auto setting proves the most efficient. This setting allows your ZyAIR

to operate at the maximum transmission (data) rate. When the communication quality drops below a certain

level, the ZyAIR automatically switches to a lower transmission (data) rate. Transmission at lower data

speeds is usually more reliable. However, when the communication quality improves again, the ZyAIR

gradually increases the transmission (data) rate again until it reaches the highest available transmission rate.

If you wish to balance speed versus reliability, you can select any of the above options 11M bit/sec or

5.5M bit/sec is used in a networking environment where you are certain that all wireless devices can

communicate at the highest transmission (data) rate. 1M bit/sec or 2M bit/sec are used often in networking

environments where the range of the wireless connection is more important than speed.

For ZyAIR B122 and ZyAIR B-320, you may select the proprietary transmission

rates of 16.5M bit/sec or 27.5M bit/sec if you are connected to another ZyAIR B-

320, ZyAIR B-122 client or ZyAIR B-500 AP and vice versa.

3.5 Wireless Network Type

Wireless LAN works in either of the two modes: ad-hoc and infrastructure.

To connect to a wired network within a coverage area using Access Points (APs), set the ZyAIR operation

mode to Infrastructure(BSS). An AP acts as a bridge between the wireless stations and the wired network.

In case you do not wish to connect to a wired network, but prefer to set up a small independent wireless

workgroup without an AP, use the Ad-hoc (IBSS) (Independent Basic Service Set) mode.

Not available at the time of writing.

At the time of writing, the proprietary transmission rates are only available for ZyAIR B-122, ZyAIR B-

320 and ZyAIR B-500.

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ZyXEL Communications B-320 Guia do Utilizador Página 25