User's Manual Part 1

ZyXEL G-220F User’s Guide
2-4 Wireless LAN Network
Figure 2-4 ZyXEL G-220F as an Access Point Example
In the example, the ZyXEL G-220F is installed on computer A and set to operate in access point mode.
Computer A shares Internet connection to the wireless LAN, so wireless stations B and C can access the
Internet.
2.1.6 Roaming
In an infrastructure network, wireless stations are able to switch from one BSS to another as they move
between the coverage areas. During this period, the wireless stations maintain uninterrupted connection to
the network. This is roaming. As the wireless station moves from place to place, it is responsible for
choosing the most appropriate AP depending on the signal strength, network utilization or other factors.
The following figure depicts a roaming example. When wireless station B moves to position X, the ZyXEL
G-220F in wireless station B automatically switches the channel to the one used by access point 2 in order
to stay connected to the network.
Figure 2-5 Roaming Example