FreeBSD manual
download PDF document: if_ural.4.pdf
URAL(4) FreeBSD Kernel Interfaces Manual URAL(4)
NAME
ural - Ralink Technology RT2500USB IEEE 802.11 driver
SYNOPSIS
To compile this driver into the kernel, place the following lines in your
kernel configuration file:
device ehci
device uhci
device ohci
device usb
device ural
device wlan
device wlan_amrr
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
if_ural_load="YES"
DESCRIPTION
The ural driver supports USB 2.0 wireless adapters based on the RT2500USB
chipset.
The RT2500USB chipset consists of two integrated chips, a RT2570 MAC/BBP
and a radio transceiver (the model of which depends on the card
revision).
The RT2522, RT2523, RT2524, RT2525, RT2525e and RT2526 radio transceivers
operate in the 2.4GHz band (802.11b/g) whereas the RT5222 is a dual-band
radio transceiver that can operate in the 2.4GHz and 5.2GHz bands
(802.11a).
ural supports station, adhoc, hostap, and monitor mode operation. Only
one virtual interface may be configured at any time. For more
information on configuring this device, see ifconfig(8).
HARDWARE
The ural driver supports USB 2.0 wireless adapters based on the Ralink
Technology RT2500USB chipset, including:
Card Bus
AMIT WL532U USB
ASUS WL-167g USB
Belkin F5D7050 v2000 USB
Buffalo WLI-U2-KG54-AI USB
CNet CWD-854 USB
Compex WLU54G 2A1100 USB
Conceptronic C54RU USB
D-Link DWL-G122 b1 USB
Dynalink WLG25USB USB
E-Tech WGUS02 USB
Gigabyte GN-WBKG USB
Hercules HWGUSB2-54 USB
KCORP LifeStyle KLS-685 USB
Linksys WUSB54G v4 USB
Linksys WUSB54GP v4 USB
Surecom EP-9001-g USB
Sweex LC100060 USB
Tonze UW-6200C USB
Zinwell ZWX-G261 USB
Zonet ZEW2500P USB
An up to date list can be found at http://ralink.rapla.net/.
EXAMPLES
Join an existing BSS network (i.e., connect to an access point):
ifconfig wlan create wlandev ural0 inet 192.168.0.20 \
netmask 0xffffff00
Join a specific BSS network with network name "my_net":
ifconfig wlan create wlandev ural0 ssid my_net up
Join a specific BSS network with 64-bit WEP encryption:
ifconfig wlan create wlandev ural0 ssid my_net \
wepmode on wepkey 0x1234567890 weptxkey 1 up
Join a specific BSS network with 128-bit WEP encryption:
ifconfig wlan create wlandev ural0 wlanmode adhoc ssid my_net \
wepmode on wepkey 0x01020304050607080910111213 weptxkey 1
DIAGNOSTICS
ural%d: device timeout The driver will reset the hardware. This should
not happen.
SEE ALSO
intro(4), netintro(4), usb(4), wlan(4), wlan_amrr(4), wlan_ccmp(4),
wlan_tkip(4), wlan_wep(4), wlan_xauth(4), hostapd(8), ifconfig(8),
wpa_supplicant(8)
HISTORY
The ural driver first appeared in OpenBSD 3.7.
AUTHORS
The original ural driver was written by Damien Bergamini
<damien.bergamini@free.fr>.
BUGS
Host AP mode doesn't support client power save. Clients using power save
mode will experience packet loss (disabling power saving on the client
will fix this).
FreeBSD 14.0-RELEASE-p11 April 13, 2008 FreeBSD 14.0-RELEASE-p11