NAME

       otus — Atheros AR9170 USB IEEE 802.11a/b/g/n wireless network device

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 otus
             device wlan

       Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

             if_otus_load="YES"

DESCRIPTION

       The otus driver supports USB 2.0 wireless network devices based on the Atheros AR9170 chipset.

       The  Atheros  AR9170  is  a draft-802.11n adapter that uses an external radio to operate in either 2.4GHz
       only or 2.4GHz and 5GHz.

       The AR9101 radio supports 1T1R operation in 2GHz only.

       The AR9102 radio supports 2T2R operation in 2GHz only.

       The AR9104 radio supports 2T2R operation both 2GHz and 5GHz.

       These are the modes the otus driver can operate in:

       BSS mode       Also known as infrastructure mode, this is used when associating  with  an  access  point,
                      through which all traffic passes.  This mode is the default.

       The  otus  driver can be configured to use Wired Equivalent Privacy (WEP) or Wi-Fi Protected Access (WPA-
       PSK and WPA2-PSK).  WPA is the de facto encryption  standard  for  wireless  networks.   It  is  strongly
       recommended  that  WEP not be used as the sole mechanism to secure wireless communication, due to serious
       weaknesses in it.

       The otus driver can be configured at runtime with ifconfig(8).

FILES

       The driver needs at least version 1.0 of the following firmware files, which is loaded when an  interface
       is attached:

             /boot/kernel/otusfw-init.ko
             /boot/kernel/otusfw-main.ko

HARDWARE

       The  otus  driver  provices  support  for  Atheros AR9170 USB IEEE 802.11b/g/n wireless network adapters,
       including:

             3Com 3CRUSBN275
             Arcadyan WN7512
             CACE AirPcap Nx
             D-Link DWA-130 rev D1
             D-Link DWA-160 rev A1
             D-Link DWA-160 rev A2
             IO-Data WN-GDN/US2
             NEC Aterm WL300NU-G
             Netgear WNDA3100
             Netgear WN111 v2
             Planex GW-US300
             SMC Networks SMCWUSB-N2
             TP-Link TL-WN821N v1, v2
             Ubiquiti SR71 USB
             Unex DNUA-81
             Z-Com UB81
             Z-Com UB82
             ZyXEL NWD-271N

EXAMPLES

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

             ifconfig wlan create wlandev otus0 inet 192.168.0.20 \
                 netmask 0xffffff00

       Join a specific BSS network with network name “my_net”:

             ifconfig wlan create wlandev otus0 ssid my_net up

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

             ifconfig wlan create wlandev otus0 ssid my_net \
                     wepmode on wepkey 0x1234567890 weptxkey 1 up

DIAGNOSTICS

       %s: failed load firmware of file otusfw-main  For  some  reason,  the  driver  was  unable  to  read  the
       microcode file from the filesystem.  The file might be missing or corrupted.

SEE ALSO

       intro(1), netintro(4), otusfw(4), usb(4), wlan(4), arp(8), hostapd(8), ifconfig(8), wpa_supplicant(8)

HISTORY

       The otus driver first appeared in OpenBSD 4.6.

AUTHORS

       The  otus  driver  was  written  by  Damien  Bergamini  <damien@openbsd.org>  and  ported by Adrian Chadd
       <adrian@freebsd.org>.

CAVEATS

       The otus driver only supports 802.11a/b/g operations.  802.11n operation is not supported at this time.

Debian                                         September 25, 2015                                        OTUS(4)