Reference

if_rum(4)

Ralink Technology USB IEEE 802.11a/b/g wireless network driver

NAME

rum – Ralink Technology USB IEEE 802.11a/b/g wireless network 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 rum 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_rum_load="YES"

DESCRIPTION

The rum driver supports USB 2.0 and PCI Express Mini Card wireless adapters based on the Ralink RT2501USB and RT2601USB chipsets.

Ralink PCI Express Mini Card adapters show up as normal USB 2.0 devices and are thus handled by the rum driver.

The RT2501USB chipset is the second generation of 802.11a/b/g adapters from Ralink. It consists of two integrated chips, an RT2571W MAC/BBP and an RT2528 or RT5226 radio transceiver.

The RT2601USB chipset consists of two integrated chips, an RT2671 MAC/BBP and an RT2527 or RT5225 radio transceiver. This chipset uses the MIMO (multiple-input multiple-output) technology with multiple antennas to extend the operating range of the adapter and to achieve higher throughput.

All chips have hardware support for WEP, AES-CCM, TKIP, and Michael cryptographic operations.

rum supports station, adhoc, adhoc-demo, 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 rum driver supports USB 2.0 wireless adapters based on the Ralink RT2501USB and RT2601USB chipsets, including:

CardBus
3Com Aolynk WUB320gUSB
Abocom WUG2700 TaUSB
Airlink101 AWLL5025USB
ASUS WL-167g ver 2USB
Belkin F5D7050 ver 3USB
Belkin F5D9050 ver 3USB
Buffalo WLI-U2-SG54HPUSB
Buffalo WLI-U2-SG54HGUSB
Buffalo WLI-U2-G54HPUSB
Buffalo WLI-UC-GUSB
CNet CWD-854 ver FUSB
Conceptronic C54RU ver 2USB
Corega CG-WLUSB2GOUSB
D-Link DWA-110USB
D-Link DWA-111USB
D-Link DWL-G122 rev C1USB
D-Link WUA-1340USB
Digitus DN-7003GRUSB
Edimax EW-7318USGUSB
Gigabyte GN-WB01GSUSB
Gigabyte GN-WI05GSUSB
Hawking HWUG1USB
Hawking HWU54DMUSB
Hercules HWGUSB2-54-LBUSB
Hercules HWGUSB2-54V2-APUSB
LevelOne WNC-0301USB v3USB
Linksys WUSB54G rev CUSB
Linksys WUSB54GRUSB
Planex GW-US54HPUSB
Planex GW-US54Mini2USB
Planex GW-USMMUSB
Senao NUB-3701USB
Sitecom WL-113 ver 2USB
Sitecom WL-172USB
Sweex LW053USB
TP-LINK TL-WN321G v1/v2/v3USB

EXAMPLES

Join an existing BSS network (i.e., connect to an access point):

ifconfig wlan create wlandev rum0 inet 192.0.2.20/24

Join a specific BSS network with network name my_net:

ifconfig wlan create wlandev rum0 ssid my_net up

Join a specific BSS network with 64-bit WEP encryption:

ifconfig wlan create wlandev rum0 ssid my_net \
    wepmode on wepkey 0x1234567890 weptxkey 1 up

Join a specific BSS network with 128-bit WEP encryption:

ifconfig wlan create wlandev rum0 wlanmode adhoc ssid my_net \
    wepmode on wepkey 0x01020304050607080910111213 weptxkey 1

DIAGNOSTICS

rum%d: could not load 8051 microcode

An error occurred while attempting to upload the microcode to the onboard 8051 microcontroller unit. 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), networking(7), hostapd(8), ifconfig(8), wpa_supplicant(8)

HISTORY

The rum driver first appeared in OpenBSD 4.0 and FreeBSD 7.0.

AUTHORS

The original rum driver was written by Niall O'Higgins ⟨[email protected]⟩ and Damien Bergamini ⟨[email protected]⟩.

History