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L i f e B o o k P 7 0 0 0 S e r i e s N o t e b o o k - S e c t i o n F i v e
Before Using the Wireless LAN
This manual describes the procedures required to prop- erly setup and configure the integrated Wireless LAN
Wireless LAN Devices Covered by this Document
This document is applicable to systems containing one of the following two devices. Most of the procedures are identical. Sections that differ between the two devices have been noted in the text:
■Intel® PRO/Wireless 3945ABG (WM3945ABG) Network Connection (802.11a+b/g)
■Atheros® AR5006EXS (AR5BXB6)
Characteristics of the WLAN Device
■The WLAN device is a
■It operates in two
■The WLANs are capable of three operating modes, IEEE802.11a, IEEE802.11b and IEEE802.11g, wireless LAN standards governed by the IEEE (Institute of Electronics and Electrical Engineers).
■Encoding of data is modulated using Direct Sequence Spread Spectrum (DSSS) and Complementary Code Keying (CCK) when the WLAN device is operating in IEEE 802.11b mode and Orthogonal Frequency Divi- sion Multiplexing (OFDM) when operating in IEEE802.11a or IEEE802.11g mode.
■The WLAN device is
■The WLAN device supports the following encryption methods - WEP, TKIP, and AES encryption.
WIRELESS LAN MODES USING THIS DEVICE
Ad Hoc Mode
(See Figure 5-1)
"Ad Hoc Mode" refers to a wireless network architecture where wireless network connectivity between multiple computers is established without a central wireless network device, typically known as Access Point(s). Connectivity is accomplished using only client devices in a
Ad Hoc mode requires that the SSID, network authenti- cation, and encryption key settings are identically configured on all computers in the Ad Hoc network.
Access Point (Infrastructure) Mode
(See Figure
Infrastructure mode refers to a wireless network archi- tecture in which devices communicate with wireless or wired network devices through an Access Point. In infra- structure mode, wireless devices can communicate with each other or with a wired network. Corporate wireless networks operate in infrastructure mode because they require access to the wired LAN in order to access computers, devices, and services such as file servers, printers, and databases.
Figure 5-1. Ad Hoc Mode Network
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