SENAO 30V214, User Manual

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7
Wireless LAN
PC Card
Wireless LAN
USB Adapter
Wireless LAN
Router/AP
56K/ISDN TA/
Cable/Xdsl Modem
Firewall
Internet
Wireless LAN
PC Card
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
Wireless LAN USB Adapter
File server
Network Printer
Enternet
Wireless LAN PC Card
Wireless LAN
Router/AP
Wireless LAN PC Card
Figure 1-4 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 1-5 . 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.
Figure 1-5 Multiple-AP and roaming
Wireless Router and IP Sharing
In infrastructure mode, in addition to acting as a bridge between an Ethernet and wireless
network, the AP can be configured as a wireless router and IP sharing device for Internet
access as shown in Figure 1-6 . You don’t have to buy an expensive router. Nor you have to buy
several modems and setup phone lines. Just share one AP, one Modem, single dial-up account,
and one phone line, dozens of network users can go surfing the Internet concurrently.