DragonFly On-Line Manual Pages

AN(4)		      DragonFly Kernel Interfaces Manual		 AN(4)

NAME
     an -- Aironet Communications 4500/4800 wireless network adapter driver

SYNOPSIS
     device an
     device an0 at isa? port 0x140 irq 5

DESCRIPTION
     The an driver provides support for Aironet Communications 4500 and 4800
     wireless network adapters.  This includes the ISA, PCI and PCMCIA vari-
     eties.  The 4500 series adapters operate at 1 and 2Mbps while the 4800
     series can operate at 1, 2, 5.5 and 11Mbps.  The ISA, PCI and PCMCIA
     devices are all based on the same core PCMCIA modules and all have the
     same programming interface, however unlike the Lucent WaveLAN/IEEE cards,
     the ISA and PCI cards appear to the host as normal ISA and PCI devices
     and do not require any PCCARD support.

     The PCMCIA Aironet cards require kernel pccard driver support.  ISA cards
     can either be configured to use ISA Plug and Play or to use a particular
     I/O address and IRQ by properly setting the DIP switches on the board.
     (The default switch setting is for plug and play.)  The an driver has
     Plug and Play support and will work in either configuration, however when
     using a hard-wired I/O address and IRQ, the driver configuration and the
     NIC's switch settings must agree.	PCI cards require no switch settings
     of any kind and will be automatically probed and attached.

     All host/device interaction with the Aironet cards is via programmed I/O.
     The Aironet devices support 802.11 and 802.3 frames, power management,
     BSS (infrastructure) and IBSS (ad-hoc) operation modes.  The an driver
     encapsulates all IP and ARP traffic as 802.11 frames, however it can
     receive either 802.11 or 802.3 frames.  Transmit speed is selectable
     between 1Mbps, 2Mbps, 5.5Mbps, 11Mbps or "auto" (the NIC automatically
     chooses the best speed).

     By default, the an driver configures the Aironet card for infrastructure
     operation.

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

DIAGNOSTICS
     an%d: init failed	The Aironet card failed to come ready after an ini-
     tialization command was issued.

     an%d: failed to allocate %d bytes on NIC  The driver was unable to allo-
     cate memory for transmit frames in the NIC's on-board RAM.

     an%d: device timeout  The Aironet card failed to generate an interrupt to
     acknowledge a transmit command.

SEE ALSO
     arp(4), ifmedia(4), netintro(4), ancontrol(8), ifconfig(8)

HISTORY
     The an device driver first appeared in FreeBSD 4.0.

AUTHORS
     The an driver was written by Bill Paul <wpaul@ee.columbia.edu>.

DragonFly 3.5		      September 10, 1999		 DragonFly 3.5