Quatech WLNG-ET-DP500 Series - Manual (Page 46)

Company Confidential Quatech, Inc.
46 Airborne CLI Reference Manual 100-8081-100
11.0 WLAN Roaming
When configured for Infrastructure mode using the
wl-type
command, the Module
supports roaming in accordance with the IEEE 802.11 specification. The following set of
commands affect the Module’s roaming capabilities:
Table 13 - Commands that Affect Roaming
Command Description
wl-type This determines the network type being used by the device server, roaming
applies to Infrastructure type only.
wl-ssid This defines the Service Set Identifier or network name the device is to
associate to.
wl-rate This defines the maximum connection rate that the device will connect with in
Mbps. It will limit the upper level connection rate but will not prevent auto-fall
back rates should network coverage cause a lower rate to be selected.
Using a lower rate may provide a better connection and longer range.
wl-fixed-rate [needs confirmation]
This parameter locks the wl-rate and prevents auto fallback.
Use of this feature can cause the device server to not function in most 802.11
networks, unless a basic rate (1Mbps or 2Mbps) is selected by the wl-rate
command.
Use of this command is not recommended.
wl-specific-scan Determines how the device server scans for AP.
0
Use Broadcast Probes to attempt to find an Access
Point.
1
Use Directed Probes to attempt to find an Access Point.
In this mode only AP’s with matching SSID’s to the
module will be probed.
When using Broadcast probes all AP advertising their SSID’s will respond to the
scan, this will cause a result for wl-scan command that will provide a list of
all responding AP’s within range of the device server.
Directed probes will limit responses to only those AP’s with matching SSID’s to
the device servers. This will also restrict the wl-scan response to only those
AP’s with identical SSID’d within range.
wl-assoc-backoff The amount of time in milliseconds to back-off after three (3) failed association
attempts. During the back-off period the device will not attempt to associate
with the AP.
The back-off time has a range of 0-20,000 milliseconds (0 to 20 seconds).
This parameter will impact the aggressiveness of the association process for a
device server in fringe coverage or noisy environments.
wl-assoc-retries The number of time the device server will attempt to retry an association
attempt, after a failure, before backing off.
The number of attempts can range from 0-32, the default is three (3).
This parameter will impact the aggressiveness of the association process for a
device server in fringe coverage or noisy environments.