APC 4000-500 User’s Manual
Version 1.1
9
1.3.2 Infrastructure
Configuration
An integrated wireless and wired LAN is called an infrastructure configuration (refer to Figure
1-2). A group of WLAN PC Card (e.g. CardBus WiFiCard™) and an Access Point (e.g. AAP2000)
is called a Basic Service Set (BSS). Each BSS will have one unique SSID. Each WLAN PC Card
in this BSS can be linked to any computer in the wired LAN infrastructure via the AP.
Infrastructure configuration not only extends the accessibility of a WLAN PC to the wired LAN,
but also doubles the effective wireless transmission range between two WLAN PC Cards.
BSS ID is, in essential, the ID of each independent WLAN PC Card. All WLAN PC Cards
configured without roaming options in this independent BSS must be configured with BSS ID of
that AP. You may need to check BSS ID of your AP by using its vendor supplied program.
Infrastructure configuration is applicable to enterprise scale for wireless access to central database,
or wireless application for mobile workers.
Two APs can be used as a point-to-point link between two LANs. LAN interconnection is
applicable to a wireless backbone between buildings.
Figure 1-2 Infrastructure Configuration
The infrastructure configuration supports roaming capability for mobile workers. More than one
