FreeBSD Manual Pages
AN(4) FreeBSD 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 pccard support, including the kernel pccard driver support and the pccardd(8) daemon. 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), 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>. FreeBSD 11.1 September 10, 1999 FreeBSD 11.1
NAME | SYNOPSIS | DESCRIPTION | DIAGNOSTICS | SEE ALSO | HISTORY | AUTHORS
Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=an&sektion=4&manpath=FreeBSD+4.6-RELEASE>