B&B Electronics WLNN-AN(ER,SE,SP.EK)-DP551 - Manual - Manual (Page 76)

76 Airborne Enterprise CLI Reference Manual
13.0 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 26 - 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-band-pref This determines the 802.11 band that will be used by the device. Options
include 2.4GHz, 5GHz or auto (scans both bands).
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 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‟s within range.
wl-assoc-backoff The amount of time in milliseconds to back-off after the configured number of
failed association attempts (defined by wl-assoc-retries). 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.