User's Manual

Wireless LAN card user manual
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• Scalability: WLANs can be configured in a variety of topologies to adapt to specific applications and installations. Configurations are easily changed and
range from peer-to-peer networks suitable for a small number of users to full infrastructure networks of thousands of users roaming over a broad area.
LAN Modes
Wireless LANs can be configured in one of two ways:
Ad-hoc
Networking
Also known as a peer-to-peer network, an ad-hoc net-
work is one that allows all workstations and computers
in the network to act as servers to all other users on
the network. Users on the network can share files,
print to a shared printer, and access the Internet with a
shared modem. However, with ad-hoc networking,
users can only communicate with other wireless LAN
computers that are in the wireless LAN workgroup, and
are within range.
Infrastructure
Networking
Infrastructure networking differs from ad-hoc network-
ing in that it includes an access point. Unlike the ad-
hoc structure where users on the LAN contend the
shared bandwidth, on an infrastructure network the
access point can manage the bandwidth to maximize
bandwidth utilization.
Additionally, the access point enables users on a
wireless LAN to access an existing wired network, al-
lowing wireless users to take advantage of the wired
networks resources, such as Internet, email, file
transfer, and printer sharing.
Infrastructure networking has the following advantages
over ad-hoc networking:
• Extended range: each wireless LAN computer
within the range of the access point can commu-
nicate with other wireless LAN computers within
range of the access point.
• Roaming: the access point enables a wireless
LAN computer to move through a building and
still be connected to the LAN.
• Wired to wireless LAN connectivity: the access
point bridges the gap between wireless LANs and
their wired counterparts.
Notes on wireless LAN configuration
When configuring a wireless LAN (WLAN), be sure to note the following points: