Wireless/Redundant Edge Services xl Module Management and Configuration Guide WS.02.xx and greater

4-9
Wireless Local Area Networks (WLANs)
Configuration Options: Normal Versus Advanced Mode
Figure 4-5. Viewing Six WLANs Assigned to a Radio (Normal)
RP radios send beacon frames to announce the WLANs that they support. The
source of a beacon frame is a BSSID, and each beacon can include only one
SSID. Therefore, if you enable more than four WLANs, RPs support all of them,
but only announce the first four. The WLAN that each BSSID announces is the
primary WLAN—in normal mode, always the WLAN with the lowest index
number on that BSSID.
On the Network Setup > Radio > WLAN Assignment screen, a green check mark
under the beacon icon indicates the SSID that the RP announces. For example,
in Figure 4-5, the RP uses BSSID 1 to send beacons for SSID A, but not for
SSID E.
While RPs do not beacon non-primary WLANs, they do respond to probes for
them, so wireless stations can connect these WLANs. Some wireless clients
require the user to manually input the correct SSID; others automatically send
out probes and discover the SSID.
You can configure WLANs 1 through 4 to operate in closed system. In this case,
the RP does not announce any SSID in beacons from that BSSID. (It does not
announce the SSID for another WLAN sharing that BSSID.)