MirOS Manual: axe(4)

AXE(4)                     BSD Programmer's Manual                      AXE(4)


     axe - ASIX Electronics AX88172 USB Ethernet driver


     axe*   at uhub? port ?
     ukphy* at mii?


     The axe driver provides support for USB Ethernet adapters based on the
     ASIX Electronics AX88172 USB 2.0 chipset, including the following:

     •   D-Link DUBE100
     •   LinkSys USB200M
     •   Netgear FA120
     •   Buffalo(MELCO) LUA-U2-KTX

     The AX88172 is a USB 2.0 device which contains a 10/100 Ethernet MAC with
     MII interface and is designed to work with both Ethernet and HomePNA
     transceivers. The AX88172 will operate with both USB 1.x and USB 2.0 con-
     trollers, however performance with 1.x controllers will be limited since
     the USB 1.x standard specifies a maximum transfer speed of 12Mbps. Users
     with USB 1.x controllers should therefore not expect to actually achieve
     100Mbps speeds with these devices.

     The AX88172 supports a 64-bit multicast hash table, single perfect filter
     entry for the station address, all-multicast mode, and promiscuous mode.
     Packets are received and transmitted over separate USB bulk transfer end-

     The axe driver supports the following media types:

     autoselect  Enable autoselection of the media type and options (this is
                 the default). The user can manually override the autoselected
                 mode by adding media options to the appropriate
                 hostname.if(5) file.

     10baseT     Set 10Mbps operation.

     100baseTX   Set 100Mbps (fast Ethernet) operation.

     The driver supports the following media options:

     full-duplex  Force full-duplex operation.

     half-duplex  Force half-duplex operation.

     The interface will operate in half-duplex mode if no media option is

     For more information on configuring this device, see ifconfig(8).


     axe%d: watchdog timeout  A packet was queued for transmission and a
     transmit command was issued, however the device failed to acknowledge the
     transmission before a timeout expired.

     axe%d: no memory for rx list  The driver failed to allocate an mbuf for
     the receiver ring.


     arp(4), ifmedia(4), intro(4), netintro(4), usb(4), hostname.if(5),

     ASIX AX88172 data sheet, http://www.asix.com.tw.


     The axe device driver first appeared in OpenBSD 3.6.


     The axe driver was written by Bill Paul <wpaul@windriver.com> and ported
     to OpenBSD by
     Greg Taleck <taleck@oz.net>.

MirOS BSD #10-current           April 20, 2003                               1

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