ZyXEL Communications P-873HNU-51B, Руководство пользователя

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Chapter 7 Wireless
P-873HNU(P)-51B User’s Guide
95
7.7 Technical Reference
This section discusses wireless LANs in depth. For more information, see the appendix.
7.7.1 Wireless Network Overview
Wireless networks consist of wireless clients, access points and bridges.
• A wireless client is a radio connected to a user’s computer.
• An access point is a radio with a wired connection to a network, which can connect with
numerous wireless clients and let them access the network.
• A bridge is a radio that relays communications between access points and wireless clients,
extending a network’s range.
Traditionally, a wireless network operates in one of two ways.
• An “infrastructure” type of network has one or more access points and one or more wireless
clients. The wireless clients connect to the access points.
802.11 Mode Select 802.11b Only to allow only IEEE 802.11b compliant WLAN devices to
associate with the VDSL Router.
Select 802.11g Only to allow only IEEE 802.11g compliant WLAN devices to
associate with the VDSL Router.
Select 802.11n Only to allow only IEEE 802.11n compliant WLAN devices to
associate with the VDSL Router.
Select 802.11b/g Mixed to allow either IEEE 802.11b or IEEE 802.11g compliant
WLAN devices to associate with the VDSL Router. The transmission rate of your
VDSL Router might be reduced.
Select 802.11b/g/n Mixed to allow IEEE 802.11b, IEEE 802.11g or IEEE
802.11n compliant WLAN devices to associate with the VDSL Router. The
transmission rate of your VDSL Router might be reduced.
802.11
Protection Enabling this feature can help prevent collisions in mixed-mode networks
(networks with both IEEE 802.11b and IEEE 802.11g traffic).
Select Auto to have the wireless devices transmit data after a RTS/CTS
handshake. This helps improve IEEE 802.11g performance.
Select Off to disable 802.11 protection. The transmission rate of your VDSL Router
might be reduced in a mixed-mode network.
This field displays Off and is not configurable when you set 802.11 Mode to
802.11b Only.
Preamble Select a preamble type from the drop-down list box. Choices are Long or Short.
See
Section 7.7.7 on page 101 for more information.
This field is configurable only when you set 802.11 Mode to 802.11b Only or
802.11b/g Mixed.
Apply Click Apply to save your changes.
Cancel Click Cancel to restore your previously saved settings.
Table 20
Network Settings > Wireless > Others (continued)
LABEL DESCRIPTION