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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
     MSI MS-6861                  USB
     MSI MS-6865                  USB
     MSI MS-6869                  USB
     NovaTech NV-902              USB
     OvisLink Evo-W54USB          USB
     SerComm UB801R               USB
     SparkLAN WL-685R             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)

     Ralink Technology, http://www.ralinktech.com/.


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).