Asus WL-330gE - Manual (Page 26)

2- Chapter 2: Hardware installation
2.5 Roaming information
If there are several ASUS Portable Wireless APs operating on a network, then a
wireless client (such as Centrino notebooks or wireless PDAs) may seamlessly
roam from one ASUS Portable Wireless AP to another. Each ASUS Portable
Wireless AP creates its own wireless cell or coverage area known as a Basic
Service Set (BSS). Any wireless client can communicate with a particular ASUS AP
if it is within that AP’s coverage area.
If the cells of multiple ASUS Pocket APs overlap, then the wireless client may
switch from one ASUS Portable Wireless AP to another. During the transfer from
one ASUS AP to another, the wireless mobile client maintains an uninterrupted
connection to the network. This is called roaming.
Multiple ASUS Pocket APs connected to a common Ethernet network form
an Extended Service Set (ESS). All members of an Extended Service Set are
configured with an ID, known as the SSID or ESSID. Wireless client must be
configured with the same SSID as that of the ASUS Pocket APs on the network
since it can only roam between ASUS Pocket APs sharing the same SSID.
Important notes on roaming
• An ASUS WLAN card can only roam between APs of the same type.
• All ASUS Portable Wireless APs must have the same SSID.
• All computers with ASUS WLAN cards must have the same SSID as the
access points to enable roaming.
• If encryption is enabled, all ASUS APs and wireless clients must use the same
encryption to establish connection.
• ASUS Portable Wireless APs’ cells must overlap to provide an uninterrupted
connection for a roaming client.
• ASUS Portable Wireless APs using the same channel should be installed away
from each other to reduce potential interference.
• We strongly recommended that you perform a site survey using the ASUS
Portable Wireless AP utility to determine the best location for each wireless
device.