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


NAME

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


SYNOPSIS

     device an


DESCRIPTION

     The an driver provides support for Aironet Communications 4500 and 4800
     wireless network adapters.  This includes the PCI and PCMCIA varieties.
     The 4500 series adapters operate at 1 and 2Mbps while the 4800 series can
     operate at 1, 2, 5.5 and 11Mbps.  The 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 PCI cards
     appear to the host as normal PCI devices and do not require any PCCARD
     support.  The PCMCIA Aironet cards require kernel pccard driver support.
     PCI cards require no switch settings of any kind and will be automati-
     cally 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 4.5		      September 10, 1999		 DragonFly 4.5

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