Asus WL-330g - Manual (Page 24)

2-6 Chapter 2: Installation
2.4.2 Site survey
A site survey (utility provided with the ASUS Pocket Wireless AP) analyzes
the installation environment and provides users with recommendations for
equipment and its placement. The optimum placement differ depending on
the device design and specifications.
2.5 Roaming information
If there are several ASUS Pocket Wireless APs operating on a network,
then a wireless client (such as Centrino notebooks or wireless PDAs) may
seamlessly roam from one ASUS Pocket Wireless AP to another. Each
ASUS Pocket 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 Pocket 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 clients
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 Pocket 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 Pocket Wireless APs’ cells must overlap to provide an
uninterrupted connection for a roaming client.
• ASUS Pocket 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 Pocket Wireless AP utility to determine the best location for
each wireless device.