H3C Technologies H3C MSR 50 - Manual (Page 11)

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WLAN Topologies for Fat APs
WLAN topologies for fat APs consist of:
z Single BSS
z Multi-ESS
z Single ESS Multi-BSS
Single BSS
The coverage of an AP is called a basic service set (BSS). Each BSS is identified by a BSSID. The most
basic WLAN network can be established with only one BSS. All wireless clients associate with the same
BSS. If these clients have the same authorization, they can communicate with each other. Figure 1-12
shows a single BSS network.
Figure 1-12 Single BSS network
The clients can communicate with each other or reach a host in the Internet. Communications between
clients within the same BSS are carried out through the fat AP.
Muti-ESS
This topology describes a scenario where more than one ESS exists. When a mobile client joins the fat
AP, it can join one of the available ESSs. Figure 1-13 shows a multi-ESS network.