ZyXEL
Note: It is recommended that wireless networks use
It is not possible to use
When you select WPA2 or
(WPA compatible) to support WPA as well. In this case, if some of the devices support WPA and some support WPA2, you should set up
Many types of encryption use a key to protect the information in the wireless network. The longer the key, the stronger the encryption. Every device in the wireless network must have the same key.
4.3 Additional Wireless Terms
The following table describes wireless network terms and acronyms used in the
Table 15 Additional Wireless Terms
TERM | DESCRIPTION |
|
|
This describes communication (through the AP) between two wireless clients | |
| within a wireless network. You might disable this kind of communication to |
| enhance security within your wireless network. |
RTS/CTS Threshold | In a wireless network which covers a large area, wireless clients are |
| sometimes not aware of each other’s presence. This may cause them to send |
| information to the AP at the same time and result in information colliding and |
| not getting through. |
| By setting this value lower than the default value, the wireless clients must |
| sometimes get permission to send information to the AP. The lower the value, |
| the more often the wireless clients must get permission. |
| If this value is greater than the fragmentation threshold value (see below), then |
| wireless clients never have to get permission to send information to the AP. |
Preamble | A preamble affects the timing in your wireless network. There are two |
| preamble modes: long and short. Most wireless clients can detect the AP’s |
| preamble automatically. However, if a wireless client tries to use a different |
| preamble mode than the AP does, it cannot communicate with the AP. |
Max. Frame Burst | Enable this to improve the performance of pure IEEE 802.11g and mixed IEEE |
| 802.11b/g networks. In pure IEEE 802.11g networks, set this to the maximum |
| value. In mixed networks, the higher the value, the higher the priority of IEEE |
| 802.11g traffic. |
Fragmentation | A small fragmentation threshold is recommended for busy networks, while a |
Threshold | larger threshold provides faster performance if the network is not very busy. |
Roaming | If you have two or more APs on your wireless network, you can enable this |
| option so that wireless clients can change locations without having to log in |
| again. This is useful for wireless clients, such as notebooks, that move around |
| a lot. |
52 | Chapter 4 Wireless LAN |