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Wireless LAN Modes:
Wireless LANs can be configured in one of two ways:
1. Ad-hoc Networking:
Also known as a peer-to-peer network, an ad-hoc network 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.
2. Infrastructure Networking:
Infrastructure networking differs from ad-hoc networking 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, allowing 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 communicate 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:
•Optimize the performance of the WLAN by ensuring that the
distance between access points is not too far. In most buildings,
WLAN Adapters operate within a range up to 125 m, depending on
the thickness and structure of the walls.
•Radio waves can pass through walls and glass but not metal. If
there is interference in transmitting through a wall, it may be that the
wall has reinforcing metal in its structure. Install another access
point to circumvent this problem.
