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NetBSD 6.1.5 - man page for an (netbsd section 4)

AN(4)				   BSD Kernel Interfaces Manual 			    AN(4)

NAME
     an -- Aironet 4500/4800 and Cisco 340/350 series wireless network driver

SYNOPSIS
     an* at pcmcia? function ?
     an* at pci? dev ? function ?
     an* at isapnp?

DESCRIPTION
     The an driver provides support for Aironet Communications 4500/4800 and Cisco Aironet
     340/350 series wireless network adapters.	This includes the ISA, PCI and PCMCIA varieties.
     The 4500 series adapters operate at 1 and 2Mbps while the 4800 series and 340/350 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 PCMCIA support.

     The PCMCIA Aironet cards require PCMCIA 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 to join an access point with an SSID
     of null string.  For ad-hoc mode, in which stations can communicate among each other without
     the aid of an access point, the driver must be set using ifconfig(8).

     For more information on configuring this device, see ifconfig(8) and ifmedia(4).

HARDWARE
     Cards supported by the an driver include:

	   Aironet 4500 Series

	   Aironet 4800 Series

	   Cisco Aironet 340 Series

	   Cisco Aironet 350 Series

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

     an%d: failed to allocate %d bytes on NIC  The driver was unable to allocate 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), ifconfig(8)

HISTORY
     The an device driver first appeared in FreeBSD 4.0, and then in NetBSD 1.6.

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

BSD					December 13, 2000				      BSD


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