Reference

ural(4freebsd)

Ralink Technology RT2500USB IEEE 802.11 driver

Part of if_ural(4freebsd).

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:

CardBus
AMIT WL532UUSB
ASUS WL-167gUSB
Belkin F5D7050 v2000USB
Buffalo WLI-U2-KG54-AIUSB
CNet CWD-854USB
Compex WLU54G 2A1100USB
Conceptronic C54RUUSB
D-Link DWL-G122 b1USB
Dynalink WLG25USBUSB
E-Tech WGUS02USB
Gigabyte GN-WBKGUSB
Hercules HWGUSB2-54USB
KCORP LifeStyle KLS-685USB
Linksys WUSB54G v4USB
Linksys WUSB54GP v4USB
MSI MS-6861USB
MSI MS-6865USB
MSI MS-6869USB
NovaTech NV-902USB
OvisLink Evo-W54USBUSB
SerComm UB801RUSB
SparkLAN WL-685RUSB
Surecom EP-9001-gUSB
Sweex LC100060USB
Tonze UW-6200CUSB
Zinwell ZWX-G261USB
Zonet ZEW2500PUSB

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 ⟨[email protected]⟩.

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).

History