an - Aironet Communications 4500/4800 IEEE 802.11DS wireless
an* at pcmcia? function ?
an* at pci? dev ? function ?
an* at isapnp?
The an driver provides support for the Aironet Communications 4500, 4800
(aka Cisco 340), and Cisco 350 IEEE 802.11 Direct Sequence
adapters. This includes the ISA, PCI, and PCMCIA varieties. The
4500 series adapters operate at 1 and 2Mbps while the 4800
and 350 series
can operate at 1, 2, 5.5, and 11Mbps. The ISA, PCI, and
are all based on the same core PCMCIA modules and all have
the same programming
interface. However, unlike the Lucent WaveLAN/IEEE
ISA and PCI cards appear to the host as normal ISA and PCI
devices and do
not require any 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
the board. (The default switch setting is for plug and
play.) The an
driver has Plug and Play support and will work in either
however when using a hard-wired I/O address and IRQ, the
and the NIC's switch settings must agree. PCI cards
switch settings of any kind and will be automatically probed
All host/device interaction with the Aironet cards is via
The Aironet devices support 802.11 and 802.3 frames, power
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
with an SSID of "". In this mode, stations can communicate
other without the aid of an access point. To join a service
driver must be set for BSS mode using the ancontrol(8) utility.
For more information on configuring this device, see ifconfig(8).
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
acknowledge a transmit command.
arp(4), atw(4), intro(4), isapnp(4), netintro(4), pci(4),
wi(4), hostname.if(5), ancontrol(8), ifconfig(8)
The an device driver first appeared in FreeBSD 4.0. OpenBSD
added in OpenBSD 2.7.
The an driver was written by Bill Paul
<firstname.lastname@example.org> and ported
to OpenBSD by
Michael Shalayeff <email@example.com>.
OpenBSD 3.6 September 10, 1999
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