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ZyAIR G-200 User’s Guide
2-2 Using the ZyAIR Utility
To set up an ad-hoc network, configure all wireless clients
in ad-hoc network type and use the same SSID and channel.
Infrastructure
When a number of wireless clients are connected using a single AP, you have a Basic Service Set
(BSS).
Figure 2-2 BSS Example
A series of overlapping BSS and a network medium, such as an Ethernet forms an Extended
Service Set (ESS) or infrastructure network. All communication is done through the AP, which
relays data packets to other wireless clients or devices connected to the wired network. Wireless
clients can then access resource, such as the printer, on the wired network.
Figure 2-3 Infrastructure Network Example
2.1.5 Roaming
Roaming is where in an infrastructure network, wireless clients are able to switch from one BSS
to another as they move between coverage areas. During this period, the wireless client maintains
uninterrupted connection to the network. As the wireless client moves from place to place, it
scans for the most appropriate AP depending on the signal strength, network utilization or other
factors.
The following figure depicts a roaming example. When Wireless Client B moves to position X,
the ZyAIR in Wireless Client B automatically switches the channel to the one used by Access
Point 2 in order to stay connected to the network.