If wired to an Ethernet network as shown in
Figure 1-5
, the AP serves
as a bridge and provides the link between the server and the wireless
clients. The wireless clients can move freely throughout the coverage
area of the AP while remaining connected to the server. Since the AP is
connected to the wired network, each client would have access to
server resources as well as to other clients.
Wireless LAN USB Adapter
File server
Network Printer
Enternet
Wireless LAN PC Card
Wireless LAN
Router/AP
Wireless LAN PC Card
Figure 1-5 Single AP bridge
Access points have a finite range, on the order of 50 meters indoor and
100 meters outdoors. In a very large facility such as an enterprise, a
warehouse, or on a college campus, it will probably be necessary to
install more than one access point to cover an entire building or campus,
as shown in Figure 1-6. In this scenario, access points hand the client
off from one to another in a way that is invisible to the client, ensuring
roken connectivity. Wireless clients can roam seamlessly between
different coverage areas and remain connected to the network.
Wireless LAN
PC Card
Wireless LAN
Router/AP
File server
Wireless LAN
Router/AP
Wireless LAN
USB Adapter
Wireless LAN
USB Adapter
Wireless LAN
PC Card
Wireless LAN
PC Card
Wireless LAN
PC Card
Figure 1-6 Multiple-AP and roaming
5
Summary of Contents for NL-2511CD PLUS EXT2
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