Quatech WLNG-ET-DP500 Series - Manual (Page 47)

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100-8081-100 Airborne CLI Reference Manual 47
Command Description
wl-beacons-missed Configures the number of missed beacons, from an associated AP, that are
missed before a roam is attempted.
The number of beacons can range from 0-256, the default is six (6).
It is not recommended to set this parameter to zero (0).
This parameter will impact the roaming aggressiveness of the device server, the
smaller the number the faster the device will attempt to roam.
If wl-ssid is set to the value any , the Device Server will perform a scan of APs and
attempt to associate with the first open AP that responds quickest to a request to
associate, this is typically the AP with the strongest signal strength. The use of the any
SSID allows the Device Server to associate with any open AP that is in range. Therefore,
as the Device Server becomes mobile, it may associate with an AP that is not in your
expected network. Due to the functionality of the any SSID you have little to no control
over the roaming behavior of the device server.
If wl-ssid is set to a value that is not the any string, the Device Server will scan for APs
that match the SSID and 802.11 capability information header. If a matching AP is found,
the Device Server will authenticate and attempt to associate. As the Device Server
becomes mobile, it will only roam to APs that match the SSID and 802.11 capability
information header.
The decision to roam is made entirely by the device server based upon the conditions of
the environment, which includes signal strength, noise, etc. The device server will
attempt to maintain as good a connection as possible and, based upon parameter
settings in the device server, will decide to move from one AP to another AP when it
cannot attain the quality of connection required.