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4 .\" Bill Paul <wpaul@ctr.columbia.edu> All rights reserved.
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33 .\" From: wicontrol.8,v 1.6 1999/05/22 16:12:47 wpaul Exp $
40 .Nd configure WaveLAN/IEEE devices
46 .Op Fl a Ar access_point_density
47 .Op Fl d Ar max_data_length
50 .Op Fl s Ar station_name
54 command controls the operation of
56 wireless networking devices via the
63 command can also be used to view the current settings of these parameters
64 and to dump out the values of the card's statistics counters.
66 Most of the parameters that can be changed relate to the
68 802.11 protocol which the
71 This includes the station name, whether the station is operating
72 in ad-hoc (point to point) or BSS (service set) mode, and the
73 network name of a service set to join (IBSS) if BSS mode is enabled.
79 should be the logical interface name associated with the
81 device (e.g., wi0, wi1, etc.).
83 With no extra options,
85 will display the current settings of the specified
89 The options are as follows:
93 Set the authentication type for a specified interface.
96 (Open System Authentication) or
98 (Shared Key Authentication).
100 .It Fl a Ar access_point_density
102 .Ar access point density
103 for a given interface.
104 Legal values are 1 (low), 2 (medium), and 3 (high).
105 This setting influences some of the radio modem threshold settings.
107 This forces the driver to initiate one round of access point scanning.
108 All of the access points found are displayed.
109 .It Fl d Ar max_data_length
110 Set the maximum receive and transmit frame size for a specified interface.
113 can be any number from 256 to 2346.
116 Display a short help.
119 .Qq microwave oven robustness
120 on a given interface.
121 This should only be used if needed.
123 In cases of slow performance where there is a good quality signal but
124 also high levels of noise (i.e., the signal to noise ratio is bad but
125 the signal strength is good), or a microwave oven is operating near the
126 antenna of the WLAN peer or access point, this option may be of use.
128 In bad signal-to-noise conditions, the link layer will switch to lower
130 However at lower transmit rates, individual frames
131 take longer to transmit, making them more vulnerable to bursty
133 The option works by enabling data fragmentation in the link
134 layer as the transmit speed lowers in an attempt to shorten the
135 transmit time of each frame so that individual frames are more likely
136 to be transmitted without error.
138 Note that this does not impact the visible MTU of the link.
140 Print out the statistics counters instead of the card settings.
141 Note that, however, the statistics will only be updated every minute or so.
143 Enable or disable roaming function on a given interface.
146 (Roaming handled by firmware) and
150 .It Fl r Ar RTS_threshold
151 .It Fl f Ar fragmentation_threshold
152 .It Fl m Ar MAC_address
153 These options are deprecated since
157 to set the link-layer address, the fragmentation threshold, and the RTS
159 .It Fl s Ar station_name
162 for the specified interface.
165 is used for diagnostic purposes.
169 software can poll the names of remote hosts.
178 command first appeared in
184 under its present name.
188 command was written by
189 .An Bill Paul Aq wpaul@ctr.columbia.edu .